Original subtitles

(All characters, places, incidents and organizations are fictional)

(Any resemblance to actual persons or events is purely coincidental)

(They found a shocking clue)

I knew that Cha Suyeol is like this.

(Texts sent by Cha Suyeol to Money Source)

(In the sound file,)

(there is someone's scream and Seulbi's sob)

He sent this to Money Source.

(Cha Suyeol was getting money as well)

(They found a box in the pine forest)

(It is empty)

(Someone is trying to hide the truth?)

Yujeong must have received it.

(The one who dug the secret is Kim Yujeong?)

(The mystery gets bigger)

(The truth is getting lost)

(Finally, the record room in Munbanggu is open)

Girls.

(In the record room, they found out about Haedeuribnida)

The clubroom is located in the basement of the dorm.

(Finally, they enter the abandoned dorm)

(They found an old camcorder on a table?)

(There is an old tape in it)

We are a volunteering club who is willing to help you with anything.

They want us to do that for free?

(This club slowly becomes more materialistic)

They are still doing it while becoming more materialistic.

One of them is Kim Yujeong but which is she?

There is a student ID on the floor?

(A student's ID is in the machine room)

(They barely get the student ID)

- Yoon Semi! - Yoon Semi?

(What is Semi's student ID doing here?)

- Semi. - Where did she go?

Let's go back for now.

We got Semi's student ID...

We...

Someone is here!

What is happening?

Hold on.

Who are you?

- It's Mr. Suyeol! - Mr. Suyeol!

Are you okay?

- We are the Mist Club. - Mr. Suyeol!

He was hit.

There's someone here!

What? What did you say?

What?

Are you okay?

Girls.

It's you.

Yes.

- Do you remember me? - Yes, we do.

I am Mr. Suyeol.

You know me, right?

Can you please open this door?

We can't open it either.

It's locked but what happened?

Girls.

Don't joke around.

Try to open it slowly.

What happened there?

Please open the door.

Are you locked in there?

Don't mess around!

(Shocked)

Whatever you are called, I helped you

when you were investigating things uselessly!

He is crazy.

Don't open the door.

This won't do.

We will help you.

We will figure out a way to free you.

So please tell us what happened.

I'm running out of time. Open the door now.

(They don't seem to be able to communicate)

Hold on. Please wait.

(Let's run away)

I will pay you.

What do you need?

I'll pay you, darn it!

Let's go, girls.

He has gone mad.

(Clanking)

What is that?

(There's someone else)

(They turn off their flashlight)

You are still alive?

I'm sorry.

Please let me go. Forgive me.

(Mr. Suyeol is being assaulted by an unidentified assailant)

What is happening?

What is this?

They went that way?

They are dragging him over there.

(The mystery club follows the unknown assailants)

Let's go up there.

Let's go to the second floor.

(We need to take pictures of the evidence)

- I think we should go out. - Let's go out this way.

(Mr. Suyeol is dragged into a black vehicle)

(Over there)

(Even on the other side)

(there are more people)

What is this? What are they doing?

The box!

(The unknown assailants are moving something)

(What are they moving?)

(Flinching)

Don't move. This is a sensor light.

(Moving cautiously)

Let's go in here.

(They move away when nobody is there)

We can see clearly from here.

(Observing)

(Looks like they are done with their task)

Let's go.

Good job.

(They lock the door and head back to the vehicle)

(They took Mr. Suyeol)

(and head out after leaving something behind)

They went down there. To the basement.

(The unknown assailants left something behind)

There were many boxes that looked like medicine in their trunk.

The abandoned dorm is linked to the current dorm.

They locked the door after leaving something behind.

There is a space under the overpass that we don't know of.

Let's go to the cafeteria.

They brought a cart in

but there was no cart when they went out.

(Looks like the unknown assailants left something)

Cafeteria?

(There is something in the cafeteria?

Mr. Suyeol seems to have gone crazy.

Did you hear him swear at us?

I did.

But I was swearing too.

He is crazy.

I told you that he is crazy.

He was screaming at us to let him out.

I'm Mr. Suyeol.

He looked mad when he said that.

When I looked at his eyes from up-close, he looked crazy.

Anyway...

(Smirking)

I told you I know who the bad teachers are.

This is scary.

(They open the door to the cafeteria)

(Struggling)

It is not locked.

I can open it.

(It is dark in the cafeteria)

They left something here.

Why am I so scared?

(They search for a door that connects with outside)

(Then they found a steel door)

(Jaejae tries to open the door)

(It is locked)

Kitchen?

Pantry? I don't think so.

They kept boxes in here.

I don't see any of them.

There's nothing here but a drinking fountain.

We opened all the cabinets and fridge

but found nothing suspicious.

This is not like any other cafeteria that we know.

There is a secret area in here.

(They check the walls)

(There is a long crack on the white wall)

(This all looks suspicious)

How can we open this?

Wait. Do we use this to open it?

(A terminal in front of the wall catches their eyes)

(They tap it using their ID)

(Not recognized)

(What about Doyoun's ID?

Yours doesn't work either, right?

I thought it would work as I am cursed but it didn't.

- Hey. - What?

Semi's ID. Let's use hers.

(Semi's student ID that they found at the machine room)

(Fail)

What about Mina's?

(What about Mina's student ID?)

(Fail)

(At a loss)

Neither Semi nor Mina's card could open it.

We were a bit confused...

Is this a machine that reads faces?

Is this a machine that reads faces?

We kept on seeing the box that recognizes faces.

Is it for our face?

(They show Semi's picture from her student ID)

(Face recognized)

(Semi's picture is recognized)

- What did you use? - Semi's face.

(Recognition success: Yoon Semi)

What did you use?

(The secret door is open)

(A hidden space in the cafeteria)

(They cautiously enter)

(They pass by a narrow corridor)

What is this?

This is the place for admins to enter.

(Clank)

(The secret door is shut again)

This place is weird too.

(In shock)

(Secret laboratory)

I don't think this kind of space should exist in schools.

This looks like a lab where clinical tests are done.

There is a bed usually seen at a place that traffics organs.

I thought that this place might be related to the part-time job.

Aren't these what they carried in here?

Yes. These are the boxes.

Open it?

Here I go.

(They find the courage to open the box)

(Empty box)

(What is in the box?)

Are they doing illegal organ trafficking?

(What do they do here?)

(BIBI is looking at something closely)

Look at this.

Clinical trial?

Hwang Mina. This is about Mina.

There was complete information about Mina.

She did a part-time job in November for a clinical trial.

(Mina did a part-time job on November 11)

'She exhibited weird actions after the test like pacing around.

Came back unconscious.'

(Came back unconscious)

(Second trial test on November 13)

'Today at 7PM at the school'.

That was when we saw her covered in blood.

Why is she staggering like that?

(They saw her walking out after her part-time job)

She gets $7,000 from doing one part-time job?

What did she do to earn that much?

That's why it's something dangerous.

(They start to put the pieces together about the job)

She is just a girl who is still very young.

How did she pay that amount of debt in a short time period?

She must've been told to either let her body

be experimented on or to pay the debt.

So it's obvious that she would agree to it.

(2. Negative side effect)

(She exhibited)

(weird actions like pacing around)

(Showed signs of lethargy and depression)

(Will be tested on)

(They became speechless due to the shocking truth)

BTH...

Beauty and health.

They do this so that it can be tested en masse?

(Large-scale test)

This is the worst.

(Illegal part-time job is done at a secret space)

- Look at this. - This is a medical record book.

(There is a file left on the table)

Waist measurement, blood pressure...

It is a record on her physical status like her weight,

height and special reactions.

'Kim Juae. Perfect fit'.

'Yoo Seonwoo. Perfect fit'.

Gong Hyeonju, Kim Taeeun, Nam Jihye, Ji Eunhee,

Kim Daeeun, Kim Jaeyeong, Ye Chaehyeon.

Lim Yujin, Jang Yeonjin, Son Chaewon,

Yeo Sua, Lee Giryun.

They are all from the investment club.

- The new treasurer. - Giryun.

Giryun is the new treasurer after Mina's embezzlement.

(They saw this familiar name on the club's organization chart)

Jeong Jimin and Kim Minji are not suitable.

Are these students being weeded out

just like livestock?

There are many students who do this part-time job.

They are all the students whom we found in the file

at the hidden space in the counseling room.

All of them are debtors.

They all do this job because they are desperate for money.

(Students who do the part-time job due to their debt)

What test did they conduct?

This is scary.

This is the worst school.

But what is in the boxes?

Or they might be empty.

(They took the suspicious items and left empty boxes here?)

Did Mr. Suyeol get captured?

(Cha Suyeol is taken away by unknown people)

But it's true that Mr. Suyeol is a bad person.

You saw how crazy he looked when he was swearing, right?

He looked like a crazy person.

(Clank)

(That is when they heard the door lock)

(Running)

(They quickly run away)

(But the door is not opening)

Oh my goodness.

(Jeez)

(It is open)

Even the door... Jeez.

(Someone enters with anger)

(Who is that?)

(Be quiet)

(I don't want to see)

(Filming a video)

(They hide by relying on a wall)

He is our club advisor.

Our club advisor.

(Jeez)

(Ki Bongkwon who is in charge of the Mist Club?)

(The door suddenly opens)

- Come out right now. - Who is there?

(Someone takes them out)

Who is there?

It's me, Semi.

It was Semi.

Semi suddenly opened the door.

It's me, Semi.

I see. It's you.

Please don't be bothered by me.

(In chaos)

(They quickly exit this place)

Who was it?

I didn't get to see him.

(They didn't see who it was)

That's Semi.

- Semi. - Girls.

You need to leave now as you are in danger.

Are you really Semi?

Just get out of here now.

(Semi tells them to leave quickly)

- Go out now. - What about you, Semi?

(Semi is back in the hall)

She told us to leave and went back in herself.

The good-faith person who is facing evil?

(Who is Semi?)

(High School Mystery Club 3)

(Today's mystery club)

(This is the last day in school)

(The opening is special as they start in the bus)

(Here comes the genius)

Shall I sit here today?

(Intuitive BIBI too)

(Doyoun with the number 18 is here too)

(Here comes the cute girl)

- You look like a doll. - You look too cute.

Look at her bag.

Hi, girls.

(Jiyoon is here too)

I have this too!

Really?

This looks like you.

I thought that we haven't shown much cuteness this season.

So you did this in a rush?

So I wanted to look cute.

It's cute.

Shall we organize the information we have so far?

There was the case related to Danbi in 2003.

We don't know whether she committed suicide or was murdered.

But the one we didn't know...

- Yang Yejin. - There's someone called Yejin.

'She hates beans.

Danbi's hair.'

I think this is not like. It's love. One-sided love.

She even did research

on Sihyeon's apple allergy in order to murder her.

The ones that gave Yang Yejin the keys are

Haedeuribnida.

(Haedeuribnida helped Yejin do something dangerous)

Can you help me get in?

There were 3 members and the one with short hair

went crazy after getting the voucher from VAPS.

You can see it in her eyes.

She does not feel responsible. She just wants the compensation.

(She lost her integrity and that caused the death of Danbi)

The reason it becomes a theory is after Seulbi's case.

She died on the same date, September 9 but in 2022.

We believe that there might be a third victim.

That will be Semi.

Shouldn't we save her then?

Semi was the one who saved us from the locked down school.

Are you sure the last voice we heard is Mr. Bongkwon?

I don't know. I'm confused.

(A mysterious man's voice in the secret laboratory)

Our club advisor.

He is our club advisor.

I think it's him.

(Ki Bongkwon)

(The one who entered the lab)

(Their similar voices is what makes them suspicious)

I was about to peek but then Semi opened the door.

It's true that Semi told us to leave

the lab in order to save us.

What if she dies today?

I will save her.

Poor Semi.

So it is almost certain that the one who

the admin calls Patron K is Ms. Kim Yujeong.

Ms. Kim Yujeong might not be Patron K.

The reason we think that she is Patron K is because

she was looking at the students' school record.

She also has the old key that was used by Yang Yejin

and also has the stalking materials.

However, she might have all those

to know what is happening as their guardian.

Those are necessary documents to understand this case.

We understood this case better because of those materials.

(Who is Ms. Kim Yujeong?)

Last night, I was thinking of this while lying down.

Who would do this if not Ms. Yujeong?

- What? While sleeping? - Yes, that's true.

I was thinking of who it might be.

There are secret areas within the school compound.

(A secret lab in the school)

Then it will be Blooming Camp.

(A camp for the students)

Only those selected can join this camp.

It means they have a boss up there.

I think this camp was actually done by one of the three members

from Haedeuribnida.

It is because that is the start of all this

and she realized that she can make something big happen in school.

So it was Haedeuribnida back then

but it then grew into the creation of Munbanggu.

The supporter of that is The Young Beauty.

She is an alumni and is still in school too.

She is also a member of Haedeuribnida.

It means there is a woman whom we have yet to identify.

How many women have we met so far?

The principal is suspicious too.

We might say that she is not the right age.

But what is her set-up?

She looks very young for her age.

What if she lied about her age?

What if she changed her identity?

What if she pretends to be someone older?

Or she might have received something from The Young Beauty.

(Oh)

That is possible.

It's because this is impossible without a leader.

There is a main power behind this that we have yet to find.

Jiyoon, before you go to bed,

do you give a briefing?

She already gives briefings at home before bedtime.

(She does not stop thinking even back at home)

Apparently she wears a microphone at home too.

(Communicating)

Let me see. Who is the suspect?

This is very funny.

This is today's mission card.

I'm scared.

Read it using the grand prize winner's voice.

(Shining)

'Today's notice.

Today is December 26 and is the last day of school.

I knew it.

Reveal the truth about this case to everybody.'

- Tell everybody? - We have to do it?

A briefing?

That's a briefing for the whole school.

I can't do that.

And today is the 26th.

Today is the day of Blooming Camp.

No!

No!

The note on the board is

'We might be able to use all students in a group'.

I guess they are going to do something in a group, right?

Are they going to run tests on the students in a group?

At The Young Beauty.

If we don't reveal it soon and get things right,

there will be more victims.

I'm scared.

We should always be on our toes.

Let's hold on and not die.

Let's hold on.

(Point)

Our school looks creepy today.

Even the weather is gloomy.

(Their way to school looks creepy today)

Is today a school day?

Why is it so creepy?

What is with today's weather?

(Gloomy weather as if it is telling something will happen)

Why is it so quiet?

What is that bus for?

Is that Blooming Camp's bus?

No!

(There is one bus waiting)

We went into school

and saw a bus parked at the gym.

I realized that is the bus that is used to drive the students

for Blooming Camp.

Why is the atmosphere like this?

- Even the weather is weird. - This is so scary.

I don't think we can change the weather so why is it like this?

Isn't this like some Hollywood project?

Every time something bad happens to a student, the weather is bad.

It even rained earlier.

(Will something happen today too?)

Is Jongdae here?

I didn't see him.

(Peeking)

He is watching the CCTV.

(They are becoming more suspicious)

Is Jongdae from the organization placed here to observe everything?

He might be Extra 1.

(Lee Jongdae: Extra 1?)

I can hear something.

But there are students here.

(Unlike what they worried about, it is cheerful in the classroom)

- Hello. - Hello, girls.

(They enter with light hearts)

(Call from Producer Yong Seungnam?)

Who is calling?

Hello?

- Hi, Jiyoon. - Yes.

Why is it so hard to get you?

What are you talking about?

You didn't even reply to my text.

I was just busy.

How have you been?

We're fine. Hold on.

Shall we talk outside?

(Running)

(They head to the quiet corridor)

You are in Songhwa, aren't you?

Yes.

I am collecting some information close to Songhwa.

I called because I thought of you.

Then, you should buy us something from the store.

(They are 18 year old girls who are always hungry)

Okay.

Remember the will from Lim's best friend that I sent you?

Yes.

I heard that someone found out about it before me.

That must be Ms. Kim Yujeong.

I know that it is Ms. Yujeong.

We are on the same track as we heard the same information.

That must have been the reason she dug near the pine tree.

I think that person is one of your teachers?

Is it Ms. Kim Yujeong?

I'm not sure about that.

He doesn't know much.

(Producer Yong hears a lot of things but nothing in detail)

- He heard me. - You know me, don't you?

I can't talk long since I am collecting information.

(But you called us)

Do you have time after school?

Yes.

Shall we have steamed buns and honey ginseng?

We'll call you once we are hungry. Goodbye.

(Chemistry that can't hide the fact they are similar in age)

Steamed buns and honey ginseng.

He ended the call after telling us useless information.

It ended after saying that he would meet us later.

But I felt somewhat relieved.

Let's say we are in danger,

we have at least one adult who will be able to save us.

The one who knows about the will is Ms. Yujeong.

But perhaps it might not be her either.

She wanted it because she didn't know how Yejin felt.

Yes, you are right.

She didn't know that Yejin died as she was feeling guilty.

Our teacher is here.

(Here comes Mr. Sanmun)

- Good morning. - Hello.

- Good morning. - I like your greeting today.

You are brimming with energy today.

(They are back to their seats as their teacher is here)

(Looking around)

What happened to those who are not here?

(A few desks are still empty)

Mina.

- Here? - Tak Sara.

(What about there?)

Semi.

(The final empty desk is Semi)

Mina is not here,

neither are Tak Sara

or Semi. There are three empty spots.

Semi helped us to escape before this.

We were worried about her safety after that incident.

If Semi is alive somewhere,

I want to save her.

(Rummaging)

Have a seat. I have something to give you.

That is not a test, is it?

There will not be a test on our last day.

Right?

(The trauma from taking a test at Saera Girls' High School)

(They had a bitter taste of life because of a test)

I can't believe this.

Please...

(I hope that it is not a test)

Pass it to the back.

I hate it when they say that.

(A mysterious paper gets passed to the back)

(Very nervous)

(Thankfully, it is not a test)

Today is our last day of school.

You have gone through so much throughout the years.

Also, Sara

has transferred to a different school.

Tak Sara? Why?

- Suddenly? - She suddenly transferred.

She didn't even say goodbye.

She didn't get to say farewell, did she?

Those who want to say goodbye can personally call Sara.

(Sara ended up leaving Songhwa Girls' High School)

Do you want to see the agenda for the closing ceremony?

Okay.

I guess we are having a ceremony at the hall.

The host is Mr. Ki Bongkwon.

There will also be a launching ceremony for Blooming Camp.

You don't have to worry about it.

There's another piece of paper, right?

Yes.

What is written on the paper?

'Information on ambition survey'.

Read the form, fill it out and pass it to your class president.

I'll see you at the gym later for the ceremony.

- And Jaejae. - Yes?

Please come with me.

- Me? - Yes.

I didn't do anything wrong.

Why just Jaejae? I'm nervous.

- Be careful. - I'm just filling this out.

(Mr. Sanmun only summons Jaejae)

(Jaejae)

The safest moments for us are

when we all five of us are together.

Something always happens when one of us is separated.

That's why I was worried.

However, it's Jaejae who is always calm even alone.

I wasn't worried at all.

It's because she is smart.

Why did he only call for Jaejae?

I wonder.

Are they starting to separate us?

No.

I'm anxious.

What is the matter?

Let's talk in the teachers' office.

We must go there?

Why do you look sad?

Did something happen? Did something happen in school?

I thought something big happened since I was called alone.

Are they going to test me?

I had that on my mind too.

What is the matter?

(She enters the office with mixed feelings)

(Sighing)

What is the matter?

(Turtle neck that comes from curiosity)

Well... You...

(Humble)

There is something that I would like to ask you.

(What is it?)

Did you...

steal Semi's necklace?

Semi's necklace?

Yoon Semi? The girl from our class?

I don't know what kind of necklace she uses.

You don't have a necklace on you?

Necklace?

No.

- You don't have it? - No.

First off, I can't lose it.

The fact that they are asking for the necklace

means that it is an important item to the villains.

If I lose it here,

I won't be able to face my friends.

I asked you to come here because I know everything.

Just be honest.

What have you heard that made you call me?

Do you have a necklace or not?

Necklace?

(Student ID that looks like a necklace)

What is hanging on your neck?

(They found the necklace at the pawnshop)

(Jaejae has worn it since that day)

(She got caught)

This is from my mother.

Show it to me.

It's from my late mother.

My mom is alive and healthy.

I'm sorry for suddenly saying that.

That is yours?

Yes. It has been passed down for the past 3 generations.

(Sighing)

I know that is Semi's necklace.

This is Semi's?

(She comes up with random stories while getting scolded)

I didn't know that this belonged to Semi.

Where did you find it?

(Loading)

Somewhere.

I can't tell that I got it from the pawnshop.

So I insisted until

the end that I just found it somewhere.

That was ridiculous.

- This is Semi's? - Yes.

- Are you certain? - Yes.

(The battle of spear and shield)

(Here you go)

(Tight)

Are you really certain?

(She had no choice but to return the necklace)

This might have been a mistake.

I will let it slide with just writing a letter of reflection.

(The place to write an apology letter)

Write a 1,000-word apology letter.

- 1,000 words? - Yes.

I can't write that much on one A4 paper.

Cram everything in that.

- It has to be a full essay? - Write it down.

This is so upsetting.

(But she still has to write it)

(She confidently sits while facing the head of students' affairs)

How did he find out?

Hello.

I mean good morning, sir.

Apology letter.

(She starts to write her 1,000-word apology letter)

What am I good at?

(It's a rule to know what others write before writing your own)

That sounds cool.

I think you will become someone cool.

What did Jaejae write?

Jaejae's is amazing.

Real estate and investment.

Building owner.

I think Jaejae can become one.

(Everybody writes well)

That is cool.

What if we study and turn out like Producer Seungnam?

No, we will become better than him.

Yena, what did you write?

I wrote super idol.

(Cute)

You want to be an idol at a supermarket?

There are people in front of shops that give out leaflets.

(Supermarket idol?)

I want to do that too.

Specialty is doll vending machine.

You want to play that all the time.

That's so cute.

Are you good at that game?

I am really good at it.

I watch it all the time on YouTube.

They revealed how it is done.

Does it really work?

Yes!

You used up a lot of money, didn't you?

Yes, I did.

So I want to earn lots of money by being an idol for supermarket.

My dream is to buy one of those machines and play at home.

Okay.

I wrote that I want to be a super idol.

My model is a soloist called Yena.

We have similar values.

(Jaejae is still writing her letter)

'On September 21, I accidentally found a necklace

that looks just like the one left by my late mother.

I could feel that it is my mother's

and naturally wear that.

However, I just found out that

it is Semi's necklace with the same design as my mother's.

Where is my mother's necklace?

As long as I am unable to identify who is the owner

of this necklace,

I wore that necklace and I regret my actions.

If you lose your item...

(She wrote that much)

Semi must have been flustered.

I would like to apologize to her.

In order to become a student of Songhwa that all are proud of,

- I will walk on a straight path.' - Ms. Yujeong.

Yes?

Can you please come here?

Yes, sir.

(The head of student affairs suddenly calls her)

Please look at this, Yujeong.

(Yujeong?)

(He shows her something)

This is a picture of when I used to teach you.

It has been around 20 years, hasn't it?

Yes, that is right.

The three of you have always been together.

You are a trio who walk around everywhere together.

You watched everything that we did before.

He showed her a picture.

I wanted to take a peek but failed.

(She tries to peek again)

(Walking stealthily)

(Frozen)

(Reverse)

(Ms. Yujeong goes somewhere else at that moment)

(She gets ready to take a photo)

(Looking bold from the back)

(She succeeded at getting some evidence)

Where is Jaejae? Shall we call him?

Let us know if something happened.

Transfer students.

Transfer students.

Come with me for a moment.

Follow me.

Jihee came to see us.

She seemed to be annoyed.

She was like, 'Come here'.

She is very rude.

Why? What about us?

This is something important. Come out now.

Just talk here.

Come out if you want to know.

(The air in the classroom becomes chill)

Just follow me and don't talk back.

(Flinching)

Must we go just because she asked for us?

(She sits down again)

It's okay. We are more than her.

I'm not going out just because she told us to.

I want to hear what she has to say.

(Coy)

We're not going because we are scared.

Jiyoon, that makes you look even weaker.

We'll be back.

I'm scared.

- I am too. - This is scary.

Where is she going?

What is this? Jaejae is not here either.

Hurry up.

(How far must they go?)

This is the scary...

'Come to the rooftop now'.

It is the rooftop.

This is scary.

What is this?

Why is this locked?

Why is this locked?

(Frozen)

Come up here.

(They don't want to but follow orders for now)

I heard about this from Bae Suzy.

I heard you are trying to find out who Munbanggu's admin is.

She was the one who wanted to tell us about it.

We didn't do that.

I heard everything. You said that Semi is the admin.

That is just a suspicion.

Why do you want to know that?

Something is fishy.

We have some debt too.

(Good job, Jiyoon)

Why are you so curious?

Mina! What part-time job did she do?

Why do you always ask me that?

I don't know what job she did.

(Let's ask about Mina's job)

What job?

(Jihee seems to be clueless about the part-time job)

Why are you so angry?

It's because you have been digging up info about me behind my back.

Aren't you the one who is digging up information about Munbanggu?

We can't help it since you did all those scary things.

Scary things? What?

You have been lending money.

That is what loan sharks do.

All I did was to lend them gums.

The rest is done by the admin.

It means Semi and Jihee have different jobs.

I think she did actually lend those gums.

(Inside the counseling room's secret area)

(On the left hand side)

Jihee is the one who only works on giving loans.

After making sure the students cannot escape their loans,

the one who pressured them and gives mental pressure

as well as link them to jobs is the admin that was chosen

by K.

It was Lee Seulbi

and now I think it's Semi.

But...

I will be the one who handles everything soon.

- You will do everything? - You are the next in line?

Semi was fired from being the admin?

I was sick of how she does her job.

She has nothing but acts like she is high and mighty.

(She can't help but to sigh)

Do you know what happens when you are the admin?

Do you know the ending?

It's good to earn lots of money.

You are thoughtless.

She is very immature.

She has no idea what she has been doing.

What is the ending for admins?

They get disposed of when they are useless.

She has no idea that she will be the 2nd and 3rd Seulbi.

I feel bad for Jihee who seems conceited.

Anyway,

stop investigating about Munbanggu for no reason.

Don't tell people about me or Semi. Got it?

We're just worried for you.

Move.

(Making way)

You should be careful too.

You be careful.

Don't become the admin. Just keep that in mind.

(Coward's special trait: Give warning when the person left)

It's weird to talk to her when she is walking away.

(We are letting it slide just for today, Jihee)

What happened to Semi?

She said that Semi was not doing her job well.

I think she did that in order to protect everybody.

She didn't even listen to the teacher.

Where is Jaejae?

(Jaejae is not back yet)

(Looking thoroughly)

Jihee is funny.

She never stopped folding her arms.

(Jaejae is back after writing her letter of apology)

Hi, girls.

(She comes back with a look of satisfaction)

(and happy stride)

(What is it?)

(Being wary)

(They gather together)

The necklace was taken away from me.

Why?

Apparently that is Semi's.

(She had no choice but to give the necklace to Mr. Sanmun)

Is Mr. Sanmun part of the gang too?

How did he know that it is Semi's?

This is what's important.

The students' affairs teacher is Mr. Son Sangnim, right?

It looks like he has been in this school for ages.

He called Ms. Yujeong and asked her if she remembers this.

Then he showed her a picture.

He said the four of them are close and now she's a teacher.

I peeked at the picture.

I took a picture of it.

Look at this.

She was eavesdropping on their conversation.

Then she coincidentally saw a picture

and showed it to us.

(Gather around)

It was a picture of Mr. Son Sangnim

and 3 other students.

I think they are members of Haedeuribnida.

(Haedeuribnida members)

She is Kim Yujeong.

She is Baek Yeohee.

(And the other person)

She is Kang Buyeong.

There is a Kang Buyeong who was in the 30th batch.

Yes, there is.

(Previously at the record room)

(Staring)

I thought this is related to Guardian K and Witness K.

So I saw the list. Kim Jeongsuk, Keum Kang...

There are people who can be labeled as K.

There is a student called Kang Buyeong in batch 30.

Kang Buyeong's surname starts with K too.

(Batch 30 means she was a student in 2003)

Is K Kang Buyeong?

But the rest were too caught up in their thoughts.

So that fact just passed by.

(Each time they try to rule out Kim Yujeong)

Perhaps it's Kang Buyeong. She was from batch 30.

(Jaejae is reminded of the student called Kang Buyeong)

Her name is Kang Buyeong.

(They become even more certain)

We didn't know her name.

I think she is Kang Buyeong and not Kim Yujeong.

She was the most corrupted and went against Yujeong.

I wonder what

this person looks like right now.

She is an alumni but not a teacher here.

There are no teachers by the name of Kang Buyeong.

She might be someone related to Blooming Camp.

That is possible.

During Blooming Camp's kick-off ceremony,

let's look and see if Kang Buyeong is there.

(Got it)

We did not get intimidated

by Jihee.

Why?

She came here angrily.

She asked us why we were doing this.

She asked if we were investigating Munbanggu.

(Interested)

But while she was talking,

she said that she would become the next admin.

However, Jihee does not seem to know about the experiments.

She just works as instructed and gets paid.

She is only interested in Gucci and money.

I'm sad that they are clueless and cheerful.

I know, right?

(They think that Munbanggu is a playground too)

Now is our free time. Shall we go to our room?

- Okay. - Sounds good.

Did you read my text?

- Yes. - I'm glad.

I saw that on the way up. Nothing happened.

Okay.

- Thank you. - Don't say that.

Thank you for worrying about me.

(They are at ease again since they are back together)

(How did Mr. Sanmun find out about the necklace?)

We should not have trusted our homeroom teacher.

Don't trust him. He might be K.

He does look kind.

I get goosebumps each time we come here.

There might be real ghosts lurking in this area.

(Let's enter our room right now)

(Oh!)

What?

What?

(Their room was ransacked)

(The interior is a mess)

(Their important items are scattered everywhere)

(Evidence that someone was going through this place)

- Our room was ransacked. - What is this?

Our room was ransacked?

We got caught.

How did they know our passcode?

Wasn't this done by Ki Bongkwon?

(Mr. Bongkwon told the passcode to the criminal?)

Thankfully, this is safe.

(Mina's laptop is safe)

My picture! Our picture!

(Yena's picture is on the ground)

(Crying)

This is so mean.

So cruel.

(Jae-fox has fallen)

I knew it since he treated us kindly.

He left after looking at this.

(The secret board is exposed)

This is so rude.

(Everything written on the board has been revealed)

I'm getting angry.

(So mean)

(They become somber)

We have to take them heads-on now.

We have no choice but to reveal this quickly.

Let's remember everything we wrote here

in our mind.

This makes me angry.

This must be how it feels to get robbed.

I don't think we lost anything.

I think that person read what we deducted so far.

That person found out

how much we know.

So this is like a threat.

'Stop what you are doing now'.

(Is this a warning for them?)

I made some changes to the board.

(They updated the board with new information)

It's true that Mr. Suyeol was threatening someone.

Then he got kidnapped at Blooming Camp.

We don't know if Ms. Yujeong is Guardian K or not either.

We also know that Mina was part of a human experiment.

Semi is the admin and she saved us at the lab.

Now, she is missing.

We also found out about a new person.

Kang Buyeong.

(Kang Buyeong: Member for Haedeuribnida. Guardian K?)

Is Kang Buyeong K?

She either has a different name or is lurking somewhere.

I think the company called The Young Beauty

is a company that supports Songhwa's archery team

and might be able to control

the student affairs teacher, principal and everybody else.

If that is true, it means they have power over the school.

Look at this. The Young Beauty.

Kang Buyeong might be a student.

She has to be a student to popularize Munbanggu.

It's easier to make them join that way than being an outsider.

So K is one of our students?

That is possible.

We need to open our mind to everything.

Kang Buyeong.

(K is one of them?)

What was Mina doing going in and out of that place?

Part-time job?

I think the reason she went there

is she was running away while covered in blood.

She was running away while bleeding due to side effects.

Then she ended up going to the overpass.

(Mina was found at the area of the student union)

(Was she on the way out from the secret lab?)

'Her side effects are wandering around

and acting weirdly. Then, she was found unconscious'.

Why was Seulbi's name written on the wall?

(Mina's last message was 'Lee Seulbi')

Isn't Seulbi dead?

It's because Seulbi was the admin.

Seulbi knew that they were doing tests on the students.

So I think she wanted to tell us that the student

related to this case is Seulbi.

But Seulbi was last year's admin.

Why did she write Seulbi instead of Semi?

(The admin has changed)

(What was she trying to tell through her dying message?)

I know that all of us are here

but why do I feel sad as if one of us is missing?

Why did you say that? That is scary.

Why did you say that? So scary.

What's the matter?

Something feels empty.

(Standing up)

What's the matter?

What are you trying to say, Jiyoon?

But I somewhat feel that way as well.

(Something feels weird but they don't know what is it)

What is this? I'm getting goosebumps.

Are they actually observing us?

(They have a bad feeling as if someone is watching them?)

We won't let this slide. We know everything.

Maybe they installed a recorder or something else here.

The doll. Look at that closely.

I will remove your eyes.

(The duck has gone crazy due to fear)

(Please don't touch my eyes)

Who else can enter our room besides Mr. Bongkwon?

Nobody.

Kim Jongdae?

He doesn't know our passcode.

But our code is 000000.

He has the keys to all rooms.

(There are keys to all rooms in the school in the office)

He can see everything.

CCTV!

(We forgot about the CCTV)

I peeked at it. Was he looking at us through the CCTV?

It means he knows everything that we have done.

That gave me goosebumps.

(Oh?)

CCTV!

We are being observed.

(CCTV that keeps an eye on Songhwa's student union)

If we go there, we can find evidence

on who actually came here through the CCTV.

We can check the CCTV to know who came here.

(The one and only witness to who entered their room)

If this person is able to come in and ransack this place,

that person can do anything to us.

Shall we wipe that off?

Just the new information.

They can't know that we know about Kang Buyeong.

(Cover it up again)

(They head out to find the criminal)

We are watching you.

We are!

(A warning that is one step too late)

Someone entered our room.

That person is a thief.

Jongdae is not here.

He is not here.

(The admin office is empty)

(There were monitors to the CCTV over here)

Yes. The door is open.

(The door is open wide)

(Why is it open?)

Didn't we shut the door before we left?

(Oh?)

I got goosebumps.

What if someone is in the room right now?

(Someone else entered within that short time period?)

Didn't we shut the door before we left?

No, we left it open.

We are watching you.

(It is wide open)

Really?

Okay.

That CCTV.

(CCTV icon on the computer background)

(But the folder is locked)

(Doyoun found something on the table)

(A notebook)

It should be in here.

(Oh)

CCTV.

It's right here.

Passcode.

What is it?

(Among the neatly organized indexes)

We wondered what the passcode is and found a notebook.

He organized everything very neatly as expected.

This is very weird.

I think he is very sensitive.

His table is very neat

and he underlined many things in red.

Others might actually get goosebumps from it,

but it gave me a sense of comfort.

The line that is drawn in color.

When he takes notes for separate months,

he made sure that everything is written in a straight line.

This is a notebook that has its own rules.

When I looked at that, I felt at ease.

(The passcode changes every month)

(Today is December 26)

From August until November,

the passcode is made up of random letters.

What is the passcode if we change it to Hangeul?

(Passcode for August)

K, R, S, R, O, H.

That is meaningless.

I don't think this is related to the Korean language.

Can we try to figure it out somewhere else? I'm scared.

Someone, keep check.

BIBI, let us know if Jongdae is coming.

Tell him that you like him.

Make a confession.

Okay. I will do that.

(Getting ready to attack with a confession)

Even the number of letters is different.

(The number of letters for every month's passcode changes?)

What? There is no rule at all.

I don't see any patterns.

It's because the length of the passcode is different too.

It was in a pattern that is unpredictable.

But from September to November, the end is the same.

I wondered why the three letters are the same...

I think I found one rule.

What?

The ends are the same as for September and November,

they end with the letters B, E, R.

Those three letters are then changed to Y, V, I.

So Y, V, I means B, E, R.

(The code is related to the name of the months in English?)

The passcode for B is Y.

V becomes E and R becomes I.

So we can just change it to spell out December.

All Es will turn into V.

Yes.

We have to change them, right?

Yes, just change them.

A becomes Z, U becomes F and G becomes T.

This changes something.

(A simple change without any specific rules?)

But there is no D.

(They exchange those letters to form the passcode)

(But there is nothing that can be used to exchange D)

Do we know everything but D?

Shall we key every single letter in for D?

Let's try that for now.

(Which letter matches D?)

Girls, this is it.

This is how they change the letters.

(What is that?)

- A to Z. - From last to start.

I wanted to know the relationship

between these random alphabets.

So I looked at the chart of letters.

Then I realized that the sequence is just flipped over

from the actual list of letters.

(Let's take August as an example)

So D is W?

W, W.

What is E? Then is E, V?

W, V, X, V.

What about M?

It's N.

B is Y.

Y, V, I.

(They have exchanged the letters)

Done.

One more time.

(She becomes BI-kat again)

(It is amazing if that is right)

(Eagle hardware)

Jiyoon, will you be okay?

(She doesn't stop)

BIBI looks like a meerkat.

(This suddenly turns into an animal kingdom)

V, I.

(Is that the answer?)

Okay.

There are four folders.

There is one that is facing the student union's corridor,

one at the corridor of the archery team's dorm.

One is facing the investment and mystery clubs,

and in front of the cafeteria.

Mist Club.

(Songhwa student union 2: Investment and Mist Club)

All videos from December 24 and 26 are here.

(Folder with videos from 24 until 26)

26?

(Videos are divided into every three hours)

Shall we start from the most recent one?

I think we can skip every 30 seconds.

(Clicking furiously)

(Who is the one that ransacked their room?)

It might be someone other than Mr. Bongkwon.

I will be in total shock if it is Mr. Sanmun.

I am so curious right now.

I am scared.

(9AM to 12PM on December 26)

Why does the CCTV recording seem scary?

This is so scary. It feels like something will pop out.

Isn't it scary to see it getting brighter slowly?

We have never observed our corridor before.

(They usually pass by this area happily with snacks)

This place looks scary when observed through CCTV.

If I knew it, I wouldn't come at night.

This is very scary.

It's dark.

(Getting chills)

(December 26 from 12AM to 3PM)

(Nobody entered their room on the 26th)

It's from yesterday.

Let's check yesterday's videos.

It was Christmas and everybody was free.

Right?

There are many files.

This is a lot.

(They start to check the videos from December 25)

This requires us to be patient.

There's someone.

There's someone.

Hold on.

In front.

Is that a student?

(Someone appears in front of their room late last night)

Is that a student?

She looks like Semi.

She is in the same clothes

as what Semi was in when she told us to leave.

(On the night when Semi saved them)

(Her hairstyle and clothes look the same)

(Today, Semi is not in school)

(But she was in school last night?)

Look carefully.

She was looking around before going in.

She kept on looking around.

What is she doing?

She is shining the flashlight against the wall.

What can she see by doing that?

Let's watch again.

Let's record this.

(They found a precious clue after watching 15 hours of CCTV video)

Light it.

One more time and light the upper area.

Turn it up again and turn on the lights.

I think she is giving us a sign.

What kind of code is that?

It is clear

that this is a message for the one watching the CCTV.

(This is not a simple move of shining the flashlight)

She didn't enter the room.

Yes. She did not.

She just left. She did not enter the room.

(After shining the flashlight)

(Semi left the hallway)

What time is this?

It was around the 20th minute.

This is 9:20PM on December 25.

(Semi went in front of their corridor at 9:20PM)

(She left a mysterious message to someone)

(Semi is not the one who entered their room)

(Who entered their room?)

(They don't understand what Semi did)

Let's check out the same time for other cameras.

Entrance to cafeteria.

Check the last video.

There is something weird there.

This was recorded, right?

(Something just passed by)

It was very quick when we saw a white light.

What is that?

That is not Semi.

Picture.

9:30PM.

This person looks old.

Who is that?

(A mysterious middle-aged woman left the cafeteria)

(She goes up the stairs and disappears)

Isn't that the principal?

(Is the person in the CCTV the principal?)

(But she looks younger than her)

We have never seen her.

Take a photo of her face.

Good.

We found the laboratory in the cafeteria.

So there's high probability that she is the main villain.

(They will know who that is if they see her in person)

I think we will recognize her.

Her clothes too.

What time was that?

This is around 9:10PM.

So after this person left,

Semi stood in front of our room.

Where did she go from here at this hour?

Check another CCTV at the same time period?

Songhwa student union's entrance.

(They will be able to see both of them)

We can see them going on and leaving.

There she is.

It took just 10 minutes.

At this late hour...

This is very suspicious.

(A mysterious woman leaves the student union)

(11 minutes later)

(Semi enters the student union)

She was waiting for that person to go in and leave the union.

(Semi keeps on looking around as if she is wary of something)

But we still don't know who entered our room.

(They still don't know who entered their room)

Must we check everything?

Semi came to our room at 9PM.

This is at around 9PM too.

(They check what happened next)

Nobody came.

Let's check from 6PM to 9PM.

(They check in reverse again)

(Who)

(is the one who entered)

(their room?)

(There is someone there?)

Before Semi left a message on the 25th,

someone entered our room.

It's been 2 hours so this is around 8PM.

(A third person?)

She is in trainers and a cap.

It's a she.

It's a student.

This is the same hoodie that we saw before.

It's her.

(The one who locked them in the science lab)

(Someone in a black hoodie)

The brat who locked us in the laboratory.

It's that punk.

(She plods towards the room)

(How does she know our passcode?)

(This trespasser knows their passcode)

She acts as if she goes to our room frequently.

She naturally enters our room.

She started to ransack our room as soon as she entered.

(She left the door open while committing crime)

Is she searching for something?

The necklace?

I think so.

(Did she trespass in order to find the necklace?)

She didn't know that I was wearing it, did she?

She searched for it and saw our board.

(She turned off the lights as if she is done searching)

Take a photo of her face.

(She shuts the door?)

She is in that room?

(The trespasser is in the room?)

(Oh?)

(What?)

No. She must've left.

I got goosebumps.

She is in there?

(She was in the room with us too?)

There's no video of her leaving...

(The trespasser did not leave the room?)

Please leave the room. Please.

She shut the door?

(Getting goosebumps)

I got goosebumps.

(I can't watch this)

(Peeking)

She is not leaving the room.

(About to faint)

Someone went in.

However, nobody left the room.

It means that she is still there.

When I think of someone being in the place that

we thought is the safest spot for us,

it turned into a trauma for me.

Is there a different route out?

Is there a place to hide in there?

Let's look at other cameras during the same time.

Then we will know how she left the room.

(They checked the entrance to the union and club room)

(Checking the corridor of the archery team's dorm)

We would see a silhouette if someone passed by.

(But nothing was recorded)

(Checking the entrance to the cafeteria)

(Nothing was recorded)

(The trespasser was nowhere to be found)

(It means they have to check their room)

For the first time I realized

that there might be something in our room.

The answer is in our room.

Is she

hiding in our room?

Or is there another secret room?

I got some goosebumps when I thought

that we actually ate and had fun there.

Why did she enter our room

and never left our room?

Where did she disappear to?

Let's organize everything neatly.

Whose is this?

Mine, right?

Let's go.

(Oh?)

Kim Yujeong.

Jiyoon, get up now.

(Running)

Yujeong!

How are you?

(Someone says hi in a friendly way?)

(Peeking)

I saw her talking with

the NAVER lady.

(They met her during anti-bullying committee meeting)

That is not bullying.

(She is friends with Ms. Yujeong?)

Since you are my children's teacher, I thought that

we would see each other often.

But I think it's getting harder to see you.

Yes.

Yujeong.

(There is another person?)

Does working as a literature teacher suit you?

You love to pretend to be kind.

So I thought you would teach ethics instead.

What is happening?

You are still the same.

Okay.

Looking at what you have been doing these days,

it makes me very curious about what you are up to.

They must be Baek Yeohee and Kang Buyeong.

Semi!

Semi!

I will keep an eye on her.

Why are things still like this between you?

NAVER lady tried to mediate between them,

but the third person who is recorded in the camcorder

looks very similar to the one in the CCTV.

I was certain that they are members of Haedeuribnida.

They look similar to how they were back then.

It is Kang Buyeong who is the guardian.

I got goosebumps.

You have nothing else to say, do you?

(There is still hatred even after 20 years)

That is the lady. The one we saw.

(She is the middle-aged woman who came out of the cafeteria?)

Hey. Where are you going?

They have the same hairstyle.

She is the kind lady.

The elegant one. The one who was seated in the 2nd seat.

She is the lady we saw

in the meeting.

(She is one of the representatives from among the parents)

(They thought she is someone who knows justice)

The meeting ended with just one word from her.

It means she has a lot of influence in this school.

Even the principal and student affairs teacher listen to her.

She is Kang Buyeong. It's her.

The girl with short hair in Haedeuribnida's video.

The materialistic one.

(She is the materialistic member)

Does working as a literature teacher suit you?

I thought you would teach ethics.

(Kang Buyeong)

(They get moving to find out the secret of their room)

(Feeling worried even before they enter the room)

What is this? What kind of place is this?

(They are back in their room)

(Something feels chilly)

Where did she go from here?

(There are no spots to hide)

- Not behind the board, right? - There is no secret area, right?

(They look around everywhere)

Is there anything up there?

(Where did she go to?)

(Stomping)

Floor? Sofa?

Maybe we will find stairs after opening something?

Hold on.

(There are many sofas at this corner)

Does it mean there is something over here?

There is something on their floor?

Let's remove these.

We can easily remove these.

The cafeteria is under us.

(Is there a path that connects to the secret lab?)

It felt like we were wasting our time.

(There is nothing wrong with the floor)

(Clueless)

It's weird that we found nothing.

As long as one does not get locked in here...

(Jiyoon checks the hangers)

I wondered where there could be a secret room.

Then the wall where there are hangers

looked weird.

(There is a wall behind their hangers)

We never realized it as we usually just hang our clothes.

However, that wall looks very clean.

Is there some kind of space behind this?

My gosh! That must be true!

Try tapping that.

(Tapping)

It's hollow.

(Is this where the girl in the hoodie disappeared to?)

Come on...

Amazing.

I got goosebumps.

(Is this a secret path?)

What kind of place is this?

1 hour 20 minutes after the hooded trespasser came in...

(Semi was standing at the corridor in front of their room)

It depends on who she was giving the signal to.

It's clear that she was facing towards the CCTV.

(Why did Semi shine the flashlight towards the CCTV?)

Let's give it a shot with our flashlights too.

If we show that signal,

will someone open the door?

(Someone will open the door for us?)

But would that person open the door for us?

(Doyoun and Jaejae go to the spot where Semi stood)

(CCTV)

(CCTV and Yoon Semi)

(They copy what she did)

(They are watching up-close)

Turn it on once.

Turn it off and on again.

Turn it on and after that

turn it on again.

That was what she did.

What was that?

(The door is not moving)

(They turn off the lights just like in the CCTV)

(They turn on the flashlight again)

You can't see anything, can you?

Maybe there is something on the wall.

There is nothing here.

She did do it while facing the CCTV.

(What signal was Semi giving?)

I'm certain Semi wanted to tell us something.

I think the person who placed the torn

notice paper from the lab

is Semi too.

Come out right now.

(Semi also saved them when they were in danger)

It's me, Semi.

If this is information from Semi,

this might be an actual pathway.

'I only have you.

Open it up.' I feel like that is her signal to us.

Let's look at the video again.

(Checking the video again to make sure they didn't miss anything)

She turned it on once.

(Turn it on once and move it upwards and downwards)

(Turn it off and move it upwards and downwards)

Let's resolve this one.

(We need to understand the pattern of the flashlight)

This is what we saw.

Turn on the lights, turn off.

Turn on and move upward and downward.

Turn off and move upward and downward.

Then turn on and off.

(They don't understand the pattern)

Morse code?

Morse code has a distinct pattern like this.

Why did she move it up and down?

(They are still clueless)

Are there any similar signs around this area?

I wonder too.

(BIBI opens the fuse box)

(Hesitant)

What happens if I push this down?

Will all lights go off if I put all of these down?

(She puts one down)

Girls.

(The lights are still the same)

(They turn off all switches)

(The room is still bright)

This is not a real fuse box.

There is a path that connects to a secret room.

So there needs to be a touch panel that is connected

to the path.

The sequence to this

is connected to the flashlight?

I think you are right.

(They see switches when they open the fuse box)

(Semi left a hint through the CCTV about the fuse box?)

The movements that she showed towards the CCTV.

We applied those movements to the box.

There are too many switches to match her movements.

(BIBI interprets Semi's movements to be four moves)

She showed 4 signs but there are 8 switches.

Must we break it into half or are they repeated twice?

I think it will be better to break them into half.

There was a change between turning on and off.

I think going up and down is also turn on and off.

So I tried to write the 4 signs into 8 parts.

Going up is turn on, right?

(Up is on)

(Down is off)

(They do it again slowly)

Turn on.

Turn off.

It is turned on

but she went up and down.

Next, it is turned off but went up and down.

Next, turn it on.

Turn it on.

Off.

(They did exactly what she did but nothing happened)

We did everything.

(Jiyoon interprets the movement of the flashlight)

(Very focused)

(Interpreting thoroughly)

Can I try this again?

(Jiyoon stands in front of the fuse box again)

If we follow her movement, we get 7 moves.

(Jiyoon interpreted Semi's moves as 7 moves)

(However, there are 8 switches)

(They know something is not right but gives it a shot)

On.

On.

Off.

On.

Next, while still being on, move up and down,

While in off, move it up and down.

On.

This is off.

That is the sequence she showed.

What about this one?

(There is one switch left)

(Something feels wrong)

Why do I feel that something is not right?

Something is not right.

If we divide the up and down separately, it will be 8 moves.

Shall we do that?

(They try to approach this from various ways)

We will start to do it differently from off.

(They start with all in off)

On.

Off.

On.

Next is on.

Up, down. Next is just up and down.

On. Off.

Off.

(Finally, the secret door opens)

That is correct.

(This path leads them somewhere)

Nothing...

Come here. Nobody is here.

(Secret hideout)

Aren't these very expensive items?

(What kind of place is this?)

Kang Buyeong!

'We believe in eternal youth'.

(We believe in eternal youth)

Kang Buyeong.

Neverland syndrome.

(The name of the company shows their obsession with youth)

(CEO Kang Buyeong)

The day to get supplies from Blooming Camp?

(Documents on the table)

It changed from December 31 to December 26.

The date was changed from 31st to 26th.

Today is the day.

Looks like the participants of Blooming Camp

will face something dangerous today.

I became pressured to get moving faster.

Check every page.

'Use carefully selected high school.

Provide the best quality blood for clients worldwide.'

Blood?

It's about blood.

Look at this.

'Obtaining blood in mass supply.'

There are another 4 schools that are selected besides Songhwa

for the improvement of The Young Beauty's technology...

The 40 people chosen for their blood are this camp's participant.

(Gambling to put them in debt is just the bait)

Multi-blood.

'Multi-blood that can be provided to people from all blood type'.

(Special blood type made from students' blood)

This is just...

This is even worse than organ trafficking.

In the end, Blooming Camp

is how they chose high school students to become subjects

for them to get blood from.

The blood that they collected

will be sold to those who want eternal youth

after changing the blood into multi-blood.

This is a beauty company that sells blood

taken from young people.

(The Young Beauty's blood triangle)

Eternal youth...

(Snickering)

I can see that this is a place where people are being

greedy with their obsession of eternal youth.

This is the price of multi-blood in USD.

It is $39,000.

- But... - That is crazy.

What kind of blood is that?

What is this multi-blood thing?

(She takes something)

(Ministry of Food and Drug Safety)

Look at this.

Their medical equipment called BTH did not receive approval.

(It can cause harm to people)

This must be a test using that.

Or perhaps they are creating BTH using this experiment.

They are doing experiments to get approval to use BTH.

I felt that these people are under a lot of pressure.

They failed to get approval on November 16.

They must've been busy with research after that.

When was Mina's first time doing part-time job?

November 11.

It was decided that their machine was not safe

on November 16.

Perhaps they did more experiments because of this.

I knew right away that Mina

became a sacrifice to this right away.

(Yena is collecting evidence)

School uniform.

Really?

(Why is there a school uniform in Kang Buyeong's hideout?)

This is disgusting.

'Lee Seulbi'.

Did you say 'Lee Seulbi'?

(The nametag on the uniform says 'Lee Seulbi')

Did she hang Seulbi's uniform here after murdering her?

She has been pretending to be Seulbi after her death?

People know Seulbi's face.

But she has been wearing a cap while wearing a uniform.

If not, she stands out when she walks in school.

(She hides her identity to avoid being suspected)

(Kang Buyeong has been committing crimes in Seulbi's uniform)

After looking at this,

Mina wrote down 'Lee Seulbi'.

'Lee Seulbi is trying to kill me'.

Honestly, people won't know how Buyeong looks.

I think we can think of

Mina's dying message being based on what was on her nametag.

(Lee Seulbi)

You stole my necklace, didn't you?

Where is it?

Tell me!

I left it at the pawnshop.

What?

(High School Mystery Club 3)

Graduation ceremony for Songhwa begins right now.

Today is the start of Blooming Camp.

(They are happy as they don't know what is happening)

(Someone is trying to take advantage of that)

I knew it from the day he was treating us kindly.

(They enter the place to reveal the truth)

(and found Mr. Ki Bongkwon?)

(Is this a trap too?)

(They start to see empty seats)

Where they captured?

(These students)

(are trembling in fear somewhere)

(The school is no longer a safe place)

Shall we ask him to come to collect information?

Hello?

(However, their desperation was not felt)

(Their one and only hope has disappeared?)

Oh no.

We need to make deductions.

(Mystery club can do this)

(Only mystery club can pull this off)

Where is it?

(Shocking records by the criminal)

(that are hidden behind a veil)

(Suspicious movements)

(by those under pressure)

(A hand is waving at them to call them in the dark)

(Inside the fear that is beyond one's comprehension)

(Will they be able to save Songhwa Girls' High School?)

Your friends will be in more danger because of you!