Original subtitles

The A-frame is slowly deploying.

Fully deployed.

A-frame stop.

Communication is good. No problems here. Go ahead.

Begin submerging to the target point.

Target sighted.

Beginning investigation now.

"Doraemon the Movie: New Nobita's Undersea Devil's Castle"

Let's go to the beach! The beach!

If we say hiking, we go hiking.

Camping is better in the mountains.

That's because Nobita can't swim.

Th-That's not true!

Shizuka, which do you pick?

Surrounded by greenery, fresh air...

Mornings awakened by birdsong...

I guess the mountains win after all.

Water activities, colorful coral and fish...

It's obviously the beach, no matter how you think about it.

Right.

Going to the mountains once in a while isn't bad either.

Great!

So it's two to two...

Heheh.

Hey, we're one person short.

Let's have him decide.

Right!

Then... haste makes waste!

It's "strike while the iron is hot."

W-Wait a sec!

Doraemon!

Always painted within my heart...

(Painted within my heart...)

My own world map, carrying my dreams.

(Bamboo-copter)

Soaring through the sky, crossing time, even distant lands...

I open the door and want to be there right away.

(Anywhere Door)

Will I still remember this when I grow up?

I'll recall it all again then.

SHALALALA...

Inside my heart...

Forever shining dreams will live.

Doraemon...

With that pocket, make my dreams come true.

SHALALALA...

Let's all sing together.

Everyone, join hands.

Doraemon...

Fill the world with dreams!

Ahhh...

So hot...

The beach!

The mountains!

Doraemon's going to pick the mountains, right?

The beach, obviously.

The mountains are nice too.

The beach.

Which one, Doraemon?

What are we talking about?

We all want to go camping together.

We're split on the camping destination.

You're coming too, right, Doraemon?

Your vote decides it.

It's gotta be the mountains!

The beach!

The beach is common sense in summer!

The mountains!

Hey, hey, Doraemon!

Sunlight filtering through the trees...

It's obviously the mountains!

At the beach we can play watermelon splitting!

And snorkeling!

In the mountains we can BBQ and hike!

Hey, Doraemon!

Doraemon!

Doraemon!

Doraemon!

Shut up!

Shut up!

Shut up!

Shut!

Shut!

Ah, why are you getting so angry?

Now I'm not in the mood.

Hey, what about camping?

With Doraemon like that, we're in trouble.

Hey, let's go cool off at your place.

Huh? You're coming?

Everyone's getting hot-headed.

Let's talk again later. Bye!

Huh? Uh... yeah.

Sigh... it's summer break.

And everyone's split apart.

Hm?

This sunken ship was carrying Inca Empire treasure

about 450 years ago,

on its way to Spain when it sank.

In yen, it's estimated to hold about 20 trillion yen worth of gold and ornaments.

20 trillion yen!?

Discussions are underway for a careful investigation to consider salvage.

Next news.

Oh man...

Hmm...

Ah!

Hm?

I know a place where you can enjoy both the sea and the mountains.

Is there really such a place?

Huh?

Isn't this... just a normal ocean?

Where are the mountains?

There!

It's on the ocean floor.

There are mountains on the ocean floor?

Let me see...

Here we go!

Oh!

What's this? So cool!

It's the "Undersea Buggy."

Let's use it to race around the undersea mountains.

Come on, get in, get in!

Oh, put these on too.

What are those?

"Air Tubes."

Stick them in your nose and you can breathe underwater.

Wait, we're going underwater!?

Don't worry about it!

Let's go!

Go! Whoa, we're falling!

Here we go!

Whoa!

Whoa!

Tap.

Hello?

What?

I've activated the Undersea Buggy's computer.

I'll leave the autopilot and navigation to you.

Understood. Scanning the surroundings now.

The Japanese coast on the Pacific side is part of the continental shelf.

Continental shelf?

You don't know what that is?

It's the flat terrain extending from the coast.

This doesn't look flat at all!

It's a cheap second-hand model.

Whoa!

It's not flat at all!

This is the continental slope.

It continues for several kilometers down to the deep sea.

Huh.

This is a good learning opportunity for Nobita.

It's getting dark... and cold.

Of course.

We're reaching 200 meters depth.

That's the deep sea.

Down here, sunlight barely reaches.

And the water temperature is very low.

So now is the time...

"Adaptation Light."

Whoa!

So pretty!

Your body is adapting to the deep sea.

Really! I'm not cold anymore and I can see clearly.

In the 22nd century, this is nothing special.

People go to planets where humans can't even survive.

With the "Adaptation Light," you can adapt to any environment.

Even 10,000 meters down, it'll feel like being under the sun.

You can take off the "Air Tubes" now.

Really?

Hmph!

I can really breathe!

But the effect only lasts 24 hours.

Humans sure are high-maintenance.

You have to rely on so many gadgets.

Whoa, whoa, whoa...

I'm fine even in the deep sea.

With this water-pressure-resistant variable plastic body,

I can change size and shape however I want.

Geez...

Don't suddenly shrink like that!

I'm just demonstrating my features.

What else can you do?

I'm very fast.

Whoa!

Whoa!

Amazing!

Wait, stop!

The ground is gone.

Don't worry.

Whoa!

Whoa!

Can it still float?

Attitude control thrusters are an optional manufacturer add-on.

What does that mean?

It means they're high-performance.

Whoa... this is like being on another planet.

This is the Japan Trench.

Nobita, look ahead!

Whoa!

There really are mountains in the sea!

See, I told you.

Now you can enjoy both the sea and the mountains, right?

They're rugged, though. Different from mountains on land.

I wonder if Shizuka will like this.

Shizuka?

She's my friend.

What is a friend?

Hmm... a friend is...

Someone you get along with really well.

What is "getting along well"?

It's... getting along well!

That's not an answer.

That's not an answer.

Friend...

Let's park the buggy here.

Wow, what a view!

Perfect spot. So...

What, what?

"Delicious Deep-Sea Shell." Heave-ho...

Here we go...

What's that gadget?

The "Delicious Deep-Sea Shell" is...

a tool used to observe deep-sea creatures.

Because deep-sea creatures are attracted to light...

Bait...

The specially formulated delicious plankton glows,

and attracts large numbers of deep-sea creatures.

They're not gathering at all?

Not that fast.

Deep-sea creatures are mostly "energy-saving,"

and many of them move slowly.

Do you have anything to speed it up?

I don't have anything like that.

They'll gather in droves on the camping day.

Huh, I see.

Now we just need to invite everyone.

Undersea mountains?

Yeah, it's a spectacular view you can't see on land.

You can also see deep-sea creatures.

Mountain climbing...

Cruising in the "Undersea Buggy"...

Wow, that sounds amazing!

Gotcha!

The deep sea? If you're asking if it's okay, I think it's okay.

So it's okay!

Alright, let's salvage that treasure ship from the news too!

No, salvage operations have already begun.

What? So we're too late?

But camping in the deep sea is a rare treat.

It's settled then. Let's go to the deep sea!

Alright!

Hey!

You haven't finished your summer homework yet.

Until you finish all of it, no camping.

At that rate, summer break will be over!

Too bad.

Ugh... I'm done for.

Mom's right. Let's do our best.

Okay, I'll finish my homework quickly.

Everyone was split, but now we're all on the same page.

We're definitely going camping.

That's the spirit!

Heheheh.

Hm?

Nobita?

Wha...!?

At this rate, his future looks bleak.

Come on, Nobita!

Don't stop! Don't get distracted!

Hang in there! Don't lose to yourself!

You can do it! It's gonna be fine!

Go, go, Nobita!

Go...

I can't take it anymore. My brain's gonna explode.

Hey, what are you doing?

Are you kidding me? I only did two problems.

And they're both wrong.

Useless.

I'm no good anyway.

Forget it.

I wish we weren't going anywhere this summer.

Hmm... hmm...

Scorching summer heat continues across the country today.

Please take precautions against heatstroke.

Mom, can't I do my homework after camping...

Of... of course not. Heh heh.

I'll make him do it.

Fine, fine...

Next up, news about a sunken ship near the Bermuda Islands.

Yesterday morning, during salvage operations, the ship appears to have vanished.

The cause is still unknown.

According to witnesses...

Gian!

What's the rush?

Did you see the news? The treasure ship disappeared!

Oh, yeah, I saw that.

How can you be so calm? The ocean's huge!

Once it's lost, it won't be easy to find again.

Don't state the obvious!

That's why...

We're going to find that ship.

Huh?

Even if we get just a tenth of the 20 trillion yen reward, that's 2 trillion!

2 trillion yen!?

Hey, when are we going camping?

Oh... about that...

Hey, everyone's here?

Nobita, I heard from Doraemon.

You can't go camping unless you finish your homework?

Just get it done quickly.

I can't help it! I don't know how to do homework!

I'll teach you what you don't understand.

Really?

Yeah. So hang in there.

The mysterious undersea world is waiting with dreams and adventures.

Hearing that, I feel motivated!

Then let's get started right away!

Yes, sir!

Oh, it's about the deep sea!

Anglerfish use light to lure their prey.

You want to see the real thing, right?

Yeah, I do!

Don't stop writing, or I'll hit you!

Hey!

Everyone working together toward one goal...

That's really nice.

Mom, look!

I finished my homework!

Oh my!

You worked hard. See, you can do it.

Can I go camping now?

Yes, go have fun.

Alright!

Alright!

Okay, okay.

Doraemon.

Hm?

Take care of everyone.

Yes, Mom!

Captain, radar has detected a target ahead.

Confirming now.

Contact them by radio immediately.

Yes, sir. Calling now.

It's a sailing ship, sir.

No response on the radio, sir. Still no response.

Sound the danger signal!

Yes, sir.

Hard to starboard!

All hands, brace for impact!

Quickly! Hurry! Hurry!

The Queen Elizabeth collided with a sailing ship off the coast of Brazil.

According to the captain of the Queen Elizabeth,

from the sailing ship's trajectory and speed, it's unlikely to be a wreck.

How eerie.

The ocean is scary.

Ah!

Nobita!

Nobita!

I... I'm off!

Hm? Take care.

Hm? Take care.

Hm? Take care.

Pretty cool, right?

Yo!

Good morning!

Shh! You never know what might happen.

Everyone, this way!

But it's sunny out, isn't it?

What's wrong?

You're such a worrywart.

Before Mom changes her mind...

Let's hurry up and go!

Whoa! Suddenly we're at sea!

What's the big idea, Doraemon?

Don't ask!

Let's go!

Whoa!

Alright, our undersea journey... begins now!

It's okay. Try breathing.

Amazing!

Amazing! I can breathe!

I can breathe!

Thanks to the "Adaptation Light."

Welcome to the middle of the Pacific Ocean.

So many fish!

It's like a giant aquarium!

Being this close is such a luxury... Hm?

Whoa!

It's like they're blessing our departure.

Look at that cool one!

Heave-ho.

Huh?

What's this?

Shizuka, this is the "Undersea Buggy."

You're Miss Shizuka, Nobita's friend?

It can talk?

Correct.

Hey, why does it use my name directly?

What's your name?

My chassis number is S83-312.

My model name is "Submersible Variable-Type Buggy."

Hmm... can I call you Bucky?

Bucky...

Yeah. Nice to meet you, Bucky.

Nice to meet you.

Pleased to meet you.

Please take us to the usual spot.

Understood.

Hold tight.

Here we go!

Whoa!

Hey, what's that?

That's a goblin shark.

It can open its jaw wide,

using the recoil to shoot forward at 3 meters per second.

Is that fast?

Slower than me.

Hey, what's hanging under it?

That's a spinyfin.

What? It's named after its fin!

Bucky, what's that?

It's walking!

Is it a fish?

That's a type of frogfish.

So cute!

Nobita, look at that one!

An anglerfish!

So even Nobita knows some fish!

Don't... don't underestimate me!

Hahahaha!

Hey, let's go to the Bermuda sea!

What's that?

To find the missing treasure!

If we find it, we'll get 2 trillion yen!

2 trillion yen!?

No way. Bermuda is on the other side of the world.

We can't go that far.

I can get there in a day.

Really?

Whoa!

I said no, and that's final!

We've already booked our accommodations for today.

Tch!

If you want to hunt for treasure so badly...

"Treasure Detector."

There are many valuable rare metals on the ocean floor.

Rare metals?

They're used in electronic devices and such.

They're traded at high prices.

Manganese and gold, for example.

Gold!?

It'll tell you if there's treasure within 100 meters.

Alright! Let's find a ton of it!

Now...

Where are you, little treasure?

Times like this are so exciting!

Becoming a millionaire and all!

Oh!

You found something!?

Is it here?

Huh?

A tire!?

A tire!?

A plastic bag...

Let me see...

That's...

Hm? A plastic bottle...

What the... is the ocean full of trash?

Doraemon, is this gadget broken?

Of course not.

All of this was dumped from the land.

Plastics don't decompose in the soil.

They remain for a very long time.

Ow, ow!

Ow... that hurts...

Huh?

That's strange.

Everyone...

Oh! Big news! Look at this!

It's rare metal! Rare metal!

Whoa, amazing!

No way!

Alright!

Bucky, can you analyze it?

Of course.

The material is palladium-nickel-molybdenum-chromium stainless steel and titanium alloy.

But judging from the corrosion, it's approximately 7,000 years old.

7,000 years!?

However, this is indeed genuine rare metal.

Really!?

That's amazing!

Alright!

Let me touch it!

This is incredible!

Something's wrong here.

That kind of thing couldn't have existed 7,000 years ago.

But the analysis says otherwise.

Huh?

Volcanic activity alert detected.

Initiating self-defense protocol.

Shockwave arrival in 3... 2... 1...

Whoa!

Earthquake!

Everyone, get in!

Hurry!

Hey, we're gonna get crushed!

Shut up! Don't make me use extra memory!

Bucky, ahead!

Nobita!

Whoa!

A... a squid!

I just saw a giant squid back there!

It was dozens of meters long!

You're still talking about that now!?

Stop it! Bucky, get us somewhere safe!

On our way!

We should be safe here.

Look over there.

Ah, it's our mountain!

Whoa!

We're here!

Here we go.

Here we go.

Amazing!

There are so many!

Why are they only here?

I lured them with the "Delicious Deep-Sea Shell."

Hey, that one looks like Doraemon!

Oh, it really does!

It does!

It does not!

Hahahaha!

Oh, what's this fish?

That's a black seadevil.

You can see a male attached to its body.

They stay together their whole lives.

What the...

Deep-sea creatures are so interesting!

Let's camp here tonight. Okay...

"Tent Apartment."

Pumping in air...

Oh!

Whoa!

Come on in!

This is the living room.

Whoa!

This is great!

Amazing!

Not too shabby.

There are private rooms too.

Whoa, it's so soft!

Geez, this bed is Gian's.

This bed is Gian's.

You can go outside too.

There's something important I need to tell everyone.

If you forget this while living underwater, it'll be a big problem.

Huh?

Huh?

Huh!

First, go in and close the door.

Then press this button.

Wait for the water to drain, then do your business.

What? It's about the toilet?

It's important!

You can try it yourself!

It'll mix with the water around us...

Uh-oh.

Uh-oh.

Doraemon, what about bathing?

I mean, we're already in water.

Oh, right!

So for dinner, let's have BBQ!

BBQ!?

Put the BBQ order card into the "Undersea Cooker."

Wait 3 minutes.

Let's see... hmm.

Can you light a fire underwater?

This is an "Underwater Campfire."

But it's too bright for atmosphere.

What's "atmosphere"?

Hmm... how should I put it...

Oh, I almost forgot.

Heave-ho.

That is...

"Dimming Bulb."

That's... put it over there.

Turn this on and the area will get dark.

Wow!

So pretty!

Now there's atmosphere!

"Atmosphere"... huh.

Mm, delicious!

So tender!

It's so juicy!

It looks like meat, but it's processed from plankton.

From that "Delicious Deep-Sea Shell"?

Yes, this is an edible variety.

Wow, it really looks like meat.

I've never had anything like this.

Who cares what it is? It tastes good!

Mm, it's like the filet mignon I had in France.

So, what's the plan for tomorrow?

Let's find the ship! To Bermuda!

No!

Why not?

I mean, where exactly is it?

From here, it's past America.

But it's mysterious, isn't it? A ship disappearing.

Anything can happen in Bermuda.

Why?

Haven't you heard of the Devil's Triangle?

Many ships and planes have disappeared there since ancient times.

Huh.

Disappeared... to where?

There are all sorts of theories.

Like an entrance to the fourth dimension...

Or aliens taking them.

Aliens!?

Hey, how about we try to solve that mystery?

You're just after the treasure.

I've said it before and I'll say it again. No!

You're so stubborn.

It'll be too late after something happens!

Alright, alright.

Hmm... Mom...

Ah, why do I have to sleep with Bucky?

Because you lost at rock-paper-scissors...

This is my first time sleeping with a human.

Hm?

Time to sleep. Good night.

Good night.

Whoa!

Bucky!?

Geez... you're a restless sleeper.

Big trouble!

Gian and Suneo are gone!

What?

Where did they go?

Hey, where's Bucky?

Heh heh heh heh. We're going to be rich!

Haha! It really can get there in a day?

I'm fast.

But is this really okay?

Of course!

We're not afraid of any danger!

They left here 3 hours ago.

We're in big trouble. Big, big trouble!

What's so bad?

The "Adaptation Light" only lasts 24 hours!

There's less than 30 minutes left!

Huh!

Now that you mention it, it's getting dark.

Come to think of it...

Hey, I can't breathe...

The "Adaptation Light" effect is fading.

Th-Then that means...

We have to go after them!

They're definitely heading toward Bermuda.

What happens when the effect wears off?

Total darkness, can't breathe,

and you get crushed flat by the terrifying water pressure.

Why didn't you tell us that before!?

I asked you, "Is this really okay?"

And you said, "We're not afraid of danger."

Are you kidding me!?

Mom!

Right!

Can we use that... the "Taking-out Suitcase"?

No.

Bucky is traveling at an incredible speed.

It's like trying to catch a bullet with your bare hands.

What about the "Anywhere Door"?

We left it at the surface.

We don't have 30 minutes to go get it.

It's so dark...

I can't see anything.

Ah, whoa!

Nobita!

Whoa!

Rev limit reached.

Crossing the East Pacific Rise.

We're falling!

Are we going to die?

Humans are so arrogant,

but in times like this, they're so helpless.

Doraemon, what's wrong?

Doraemon!

It's... it's time.

What! No way!

It's my fault.

I'll smash myself as punishment!

Calm down.

That won't solve anything.

If I were more reliable, I could have saved them both... Hm!

Can't you just use the "Taking-out Suitcase" to get the "Anywhere Door"?

Why didn't I think of that earlier?

Nobita, calm down!

Ugh...

I hear something.

Really?

It's coming from the direction those two went.

What happened?

Bucky!

Bucky, are you okay?

Gian! Suneo!

Gian! Suneo!

They're not crushed by the pressure.

Why?

Please, God...

I'll even listen to Gian's terrible singing.

Please save them!

Who's singing is terrible, you jerk!

Huh? Gian!

Suneo!

They're both alive!

Huh... we're alive...

It's a miracle!

Doraemon, you're pretty careless.

The "Adaptation Light" didn't wear off.

Hmm... that's impossible.

Oh.

We got into big trouble because of that thing.

I was just following orders.

We checked already.

What did you say?

You cheap second-hand buggy!

Wait.

I told you.

Humans are always like this.

You want to fight? I'll take you apart piece by piece!

Try it!

Everyone, calm down!

Bucky's right!

It was just following orders.

Miss Shizuka...

You two are the ones at fault for going off without telling anyone.

Please don't do anything so reckless again.

We're sorry.

We've learned our lesson.

Alright, let's put this behind us.

We're here. This is the Mariana Trench.

The famous one?

What is it?

A trench is an underwater canyon.

And the deepest one in the world is the Mariana Trench.

Let's go!

Yeah!

Yahoo! Wait!

Hey!

Hey, Bucky, wait!

No!

The Mariana Trench is about 11,000 meters deep.

If you put Mt. Fuji and Mt. Everest on top of each other, they'd barely reach the surface.

Hmm, that's hard to imagine.

The deepest human dive record so far is about 10,000 meters.

We're about to break that record!

Heh heh!

We're going to a place no one has ever set foot.

That's right!

Everyone, this is the deepest point on Earth.

It doesn't look that different.

Whoa!

The surface is all hazy and invisible!

Hey, hey, since we're here, let's take a commemorative photo!

Good idea!

This is proof we came to the deepest point!

"Deep-Sea Camera."

Humans are so inconvenient.

If you record it in your electronic memory, you can see it anytime.

We can't do that like you.

So insensitive.

Since we don't have memories, we keep them in physical form.

Alright, say cheese!

Cheese!

Heave-ho!

Nice!

Perfect!

Give us copies later too.

Alright, Suneo, let's go exploring!

OK!

Hey, Doraemon.

Can I take some sand as a souvenir?

Photos are better, don't you think?

Everyone, come over here!

What's up?

Hey, look!

Big discovery!

No doubt about it. It's the same ship from the news.

Let's investigate.

Wait.

Nobita, come with us.

It's dangerous.

I'll go too.

It's pretty damaged.

Ah, it's open.

We can get in from here.

Where's the treasure?

20 trillion yen!

This is kinda scary.

Geez.

Hey, there might be something weird in there.

If you're a coward, wait outside!

I'm not going in!

Suit yourself.

It's a total mess inside.

Ah.

This is...

Gold?

Huh?

Let me see.

It's real!

Someone already took the rest.

You've got to be kidding me.

There must be more. Let's look together, Suneo.

Eek! Wh-Whoa!

Can I ask you something?

What?

Why do you defend me, Miss Shizuka?

None of my previous owners ever treated me like that.

I guess I couldn't just stand by.

Shizuka is kind.

Couldn't stand by...

Something's coming!

S-Sk-Skeletons!

Huh?

Hm?

They look quite old. Probably the ship's crew.

Hey, everyone!

What happened?

Are you okay?

Th-There it is!

No sign of the ship's power source...

20 trillion yen... gone...

So someone moved the ship here and took the gold?

We were too late.

Could someone move a ship this big?

But it's definitely here, in the Mariana Trench.

Help!

What?

What's happening? An earthquake?

What's going on?

The mast broke!

Where's Nobita?

Nobita!

Hey, Nobita!

Nobita!

Over here!

Nobita, are you okay?

Yeah.

Why were you buried in a place like this?

I was attacked by a giant fish.

A fish destroyed the ship?

Yeah.

Like a whale?

In the deep sea?

It's true! There was a fish this big!

Here he goes again.

You said the same thing about a giant squid yesterday.

But I saw it! Bucky saw it too, right?

I did not see anything that could be defined as a fish.

See!

See? It was just Nobita's imagination.

The ship looks pretty badly damaged too.

But it's true! There was a huge fish!

Yeah, sure, we believe you.

But there are so many mysterious things.

Hmm... no treasure, the ship was moved here...

And the 7,000-year-old metal...

Plus the giant squid and the giant fish...

The most mysterious thing is Gian and Suneo's "Adaptation Light."

It should have worn off by now, no question.

Yeah... that's what's bothering me.

Hm?

Who's there?

Bucky?

What's wrong?

May I have a word?

Miss Shizuka, you want to know about Gian and Suneo's "Adaptation Light," don't you?

Yes.

I saw it in my memory log.

Want to see?

I can see it?

Yes.

Beginning playback.

Are we going to die?

Humans are so arrogant, but in times like this they're so helpless.

There was no optimal solution.

I ran simulations.

But all outcomes resulted in death.

Shizuka, what's wrong?

Nobita.

Oh, it's us.

From that incident?

Enlarge projection.

Whoa!

Whoa!

What is that?

Unknown.

I possess extensive information about the ocean.

But this is not in my database.

A person!?

"Adaptation Light."

Whoa!

That's the giant fish I saw!

See, I told you!

At this rate, the giant squid will show up too.

It's not a fish.

What kind of fish shoots beams?

Huh?

After that, I shut down.

What?

Why didn't you tell us something this important?

Because I wasn't asked.

You've got to be kidding me!

Calm down, Gian.

Now's not the time to fight.

There's a new question.

Who saved you...

And why.

Don't touch me!

N-N-Nobita, slowly come this way.

Huh?

Whoa, it's a squid!

Ah, see! See!

This is no time to be happy!

Whoa!

Doraemon, use something!

Anything! Anything!

"Anywhere Door"!

Whoa!

No!

I don't taste good!

Let go of Nobita!

Shizuka!

"Shrinking Light"! Ow, ow, ow!

Let go of him, you...

Mom!

Darn it!

Whoa!

Doraemon, what did you do?

It wasn't me!

That's...

The one from before...

It saved us again.

Thank you! Thank you!

Again, in our time of need.

Whoa!

Hm... Ah...

Where is this?

This is your birthplace.

3.8 billion years ago, where life first appeared on Earth.

Inside the ocean.

Soon after, life began to live on land.

That was only 400 million years ago.

Fierce competition for survival unfolded.

Many species were born and went extinct.

Some even returned to the sea from the land.

Like whales.

Dolphins. Seals.

And...

Ah!

We Undersea People.

Undersea People!

Doraemon!

Shizuka!

Where are we?

I don't know.

I had a strange dream.

Me too.

It must have been an educational dream.

Ah!

You're...

We wanted you to understand us Undersea People.

So you were the one from before!

Sorry.

I wasn't sure if I could trust you.

That was pretty rough treatment.

Rough? You land-dwellers are the last to talk.

We've witnessed the bloody history of your endless wars.

Our caution is understandable.

But after analyzing your brainwaves, we confirmed you're not a threat.

So we decided to welcome you to our nation.

I'm El.

What's going on?

You're Nobita, Shizuka, and Doraemon, right?

But I never expected you to be a robot.

I thought you were a cirroteuthis.

Cirroteuthis?

No!

I'm a cat-type robot!

It's best to keep that a secret here.

Why?

Where are Gian and Suneo?

And Bucky?

It overheated.

It's being maintained now.

What about the other two?

Psychological evaluation diagnosed them as "violent" and "liars."

They've been locked up.

What?

No way.

It's a misunderstanding!

They're good people at heart.

Good?

Let me talk to them.

Hmm... follow me.

Whoa!

Amazing!

So beautiful!

A civilization like this underwater...

This is the Mu Federation.

It's a little beyond where you found the sailing ship.

How do you know that?

After discovering those two,

we were monitoring you.

So it was El who saved them when their "Adaptation Light" wore off.

Well, we call it the "Adaptation Light."

But why did you save us?

Why did you bother?

Darn it! Locking us up in a place like this!

Let me out! Let me out!

I'll smash this place and burn it down!

Whoa!

That won't work underwater!

Ugh... darn it!

And you call them good?

Oh no...

Hey, everyone!

Let us out!

We'll find a way to save you.

Just wait a little longer.

Alright, my friends.

I can't decide this alone.

You can speak directly with the Prime Minister.

No!

They're far too dangerous!

Absolutely not!

Land-dwellers are unwelcome guests enough as it is.

But according to the laws of the sea,

intelligent life forms without defenses are protected.

Having passed the review, you are granted citizenship.

You will spend the rest of your lives here.

You brought us here by force!

We cannot let land-dwellers know of this place.

We won't tell anyone.

So please, let us go home.

No.

The law states that those who cross the border without permission

shall be sentenced to death.

You won't be mistreated. Just get used to life here.

Wait!

Ah, Nobita!

You can use this room freely.

But please do not go outside for now.

If you need anything, call for someone outside.

That is all.

Ahh... this is terrible.

Forget summer break... we'll be here forever.

No we won't. Let's get out of here.

Huh?

But if we get caught...

It's the death penalty.

It's too dangerous.

Then we just don't get caught.

Who do you think I am?

Doraemon.

If you obey orders, you'll be fine.

Time for an upgrade.

System reboot initiated.

Miss... Miss Shizuka?

Bucky! Shizuka, hurry!

Huff...

It's no use! It won't budge!

Oh... whoa!

Whoa!

Well, my friends... I've been waiting!

Quick, move aside!

The Prime Minister is angry.

Why help them? You could have just ignored them.

I don't know myself.

I felt it was the right thing to do.

I hope they don't provoke Poseidon.

Hm... Ah!

Please come at once.

What happened?

The land-dwellers have escaped!

What?

You what?

We've been spotted.

Going up is dangerous!

Now!

We're split up!

Ah!

Hm? What?

Quiet!

Hey, you!

Whoa, I've been spotted!

Stop!

Sorry!

Where did they go?

This way!

Huh?

Shh!

They must be nearby.

I'm so glad you're okay!

Where did you go?

Don't worry us like that!

Sorry.

Have you seen the land-dwellers?

No.

Uh... this way too.

Are you the land-dwellers?

No... we're not.

Halt!

We're looking for the land-dwellers.

Have you seen them around here?

Land-dwellers?

Ah, I saw them!

Haha!

Wait!

This old lady claims she went to Atlantis!

Don't joke around!

Enough, let's go.

Hahaha...

Stop!

You two, hide a little longer.

I'll take you near the border.

Hey, can we trust this person?

I don't know.

But it seems safer than running around like before.

We're here.

Go straight through this oyster farm and you'll reach the border.

Once you cross, security should lighten up.

Ah! Nobita!

Let's go.

Why are you helping us?

Everyone else seems to hate land-dwellers.

There's no harm in having one.

Don't think badly of me.

Everyone's just scared.

They don't want to anger someone.

Go now! And don't get caught!

Hurry!

Nobita, hurry!

Hm.

This is madness.

They're coming!

What do we do, Doraemon?

That must be the border.

There's nowhere to hide.

Finally, it's time for the "Chameleon Hat."

Huh?

Here!

Whoa!

El, is that...?

Found them!

Hurry!

Whoa!

Give up!

El! Ugh!

Quickly!

They vanished!?

Huh?

Hey, what's going on?

We're creating a hyperspace above ground.

To them, it still looks like normal ground.

It's like a magic mirror.

Look, they're leaving.

Even if you disappear, I know where you're going!

Alright, let's move.

The hyperspace moves with us.

We're about to cross the border.

Once we cross, there's no escaping the death penalty.

The trench ends here.

The "Chameleon Hat" can't move vertically.

What now?

We have to wait for them to leave.

Huh.

Controls failing!

Whoa!

Mayday! Under attack by combat fish!

Unable to fight back!

Can't move?

More are coming!

Wait, Gian!

No way I'm just watching!

I'll save you!

I'm your opponent!

What are you doing?

We're coming too!

Oh, fine!

Fine! I'm going too!

Mom!

No! Run!

I got you!

Doraemon!

Calm down!

"Shrinking Light!"

Got it! Take this!

Alright!

Gotcha!

Ah!

Hey, get off!

We did it!

You're safe!

Why did you come out!?

I was supposed to arrest you!

Now that you've crossed the border, there's no escape from the death penalty!

Why did you come out!?

I would have felt too...

Hands up, land-dwellers!

You're completely surrounded!

Okay, hands up!

What were you thinking!

If we had just stayed hidden, we could have escaped!

And who was the idiot who charged out first!?

It was me...

I'm an idiot! An idiot!

What's going to happen to us?

Like El said... the death penalty.

Mom!

Nobita, I have something to ask you.

Right now?

Why are humans so illogical?

Watching you these past few days, I just don't understand.

Like just now. If you had left earlier...

It's complicated.

People do things like that.

Even if they know, there's no clear answer.

If they think it's right, they just do it.

Are "right" and "answer" different?

Maybe not always.

If you feel in your heart that it's right...

"Heart"... is that different from the physical organ?

Hmm... I guess so.

I don't understand what "heart" is.

"Right" and "answer" are different...

That sounds like...

a program bug.

Hahahaha! Humans are complicated, aren't they?

Even I don't understand a lot of things.

Regarding the verdict for the five land-dwellers,

in accordance with the laws of the Mu Federation, they are sentenced to death.

Does anyone object?

Then this session is adjourned.

Wait!

What is it?

I beg you to pardon them.

They risked their own lives to save me.

They are brave people!

Call it brave or call it foolish,

they probably knew they couldn't escape,

so they saved you to gain sympathy.

Is that the only way you can see it?

That heart that couldn't stand by while someone was in danger...

As a fellow Undersea Person, I am ashamed!

Let's say we acknowledge their heroic act.

But rules are rules.

The law of the Mu Federation states that border crossers are sentenced to death.

Those are just old laws covered in oyster shells from thousands of years ago.

I know.

These laws were made out of fear of Poseidon.

Don't cross the border... restrict technology...

All to avoid provoking the outside world.

What are you trying to say?

What matters is the heart.

At first, I didn't know why I saved them.

But watching them, I realized.

I too have a heart... a human heart.

Please, calm down.

Have you forgotten what land-dwellers have done?

Dumping sewage and plastic into the ocean.

Plundering resources from the deep sea.

There is no room for sympathy.

Don't you agree?

That's right!

Isn't this just like 50 years ago?

Then what are we?

We cover up what we fear.

We don't face the root of the problem.

We've always seen change as evil.

If we had listened to her back then, instead of dismissing her...

Perhaps there would have been a different future.

Watch your words!

What's going on?

Report!

Bermuda Volcanic Zone Observatory has issued a Level 5 activity alert.

The Devil's Castle is showing signs of activity.

Display the images from the observatory.

This is the worst-case scenario.

The world... is coming to an end.

Level 5 alert! Quickly!

What's happening?

Oh, God...

Nabala, ruler of the four seas!

Please stop the undersea volcanic activity!

We have no means of defense left!

There is one more option.

Introducing...

Tri-Lein, who reported contact with Poseidon 50 years ago.

What does she have to do with this?

She is the only one who has ever returned alive from the Devil's Castle.

Let us hear what she has to say.

There was no evidence back then.

How can we believe her?

It's too risky.

Is there anyone else who has seen Poseidon?

What about those who went to Atlantis?

All we can do now...

is not watch Poseidon's mood.

And not just pray.

I'll sit down for a bit.

My back hurts.

Sorry, I didn't notice.

If we don't make a choice now, and just pray here...

we will fall with this nation.

But if what she says is true...

we can stop Atlantis.

If true, it is a "ray of hope."

If false, it's "the end of the world."

One or the other.

Now is the time for change.

Prime Minister, please follow your heart and make the right choice!

Ma'am, I beg of you...

please tell us what happened.

Ah...

Of course.

But even if we can go to Atlantis,

their power remains unchanged.

I'm not sure we can win.

I understand.

We have with us...

people who can determine the outcome of this situation.

I don't want to die!

Mom!

We have a request. Will you help us?

To save this world...

we need your strength.

Please... help us once more.

Hmm.

Granny...

Were you captured because of us?

It's okay. I'm just glad everyone is safe.

But why are you here?

This is Tri-Lein.

She is the key to the operation to suppress the Devil's Castle.

Devil's Castle?

Operation?

The Devil's Castle is a fortress controlled by an AI called "Poseidon."

About 7,000 years ago,

the Mu Federation in the Pacific and the Atlantis Federation in the Atlantic were at war.

It was a brutal war.

Robots and combat fish were used.

7,000 years...

Could it be...?

Why do you have that?

It belongs to the Mu Federation.

No way.

It's true.

I told you.

After that, Atlantis developed the Devil's Horn.

Devil's Horn?

A bomb powerful enough to destroy the Earth.

What!?

Using it as a threat, they forced the Mu Federation to surrender unconditionally.

But the Mu Federation is still here.

Don't be naive.

Look around you.

Yes. The Devil's Horn test failed.

Atlantis was destroyed.

But you said it could destroy the Earth...

To protect against the Devil's Horn,

Atlantis erected a defense barrier around itself.

That barrier extended all the way up into the sky.

Ironically, the barrier contained the explosion within Atlantis.

The Bermuda Triangle.

But wait...

Doesn't that mean there's peace now?

The AI Poseidon survived.

If the Devil's Castle's territory is disturbed,

it is programmed to launch the remaining Devil's Horn missiles.

As long as we don't disturb it, it's fine.

That's why the Mu Federation has always avoided it.

But now that balance is being threatened.

An undersea volcano near the Devil's Castle is about to erupt.

Once the volcano erupts, Poseidon will mistake it for an attack.

It will almost certainly launch the Devil's Horn deployed outside the barrier.

Fish, shellfish, plants... all life will be wiped out.

The Earth will become a dead planet.

So no matter what, we must stop Poseidon.

But how do we get through the barrier and the Devil's Horn to reach Poseidon?

That's where Tri-Lein comes in.

No one in history has ever seen Poseidon.

But 50 years ago, Tri-Lein

reported that she had come into contact with Poseidon during a mission.

However, the assembly at the time ruled it would cause panic.

They stopped the investigation.

They dismissed her testimony as lies.

This is all too hard to understand.

So we're going to Poseidon based on her report.

If only we could see what Granny saw back then.

We can do that!

I almost forgot.

"Illusion Light."

What's that?

It's a gadget that projects the speaker's memory for everyone to see.

You have something like that?

Granny, please tell us what happened.

During a mission, I was attacked by combat fish and fell.

Soon after, armored machine soldiers came.

I believe they were called the Iron Cavalry.

They took me to Poseidon.

I thought I was going to die.

That is Poseidon?

But I seized an opportunity and managed to escape.

I slipped through crevices and hydrothermal vent caves.

I barely made it outside the barrier.

By chance, a Mu Federation search team arrived.

They rescued me.

It was a miracle I survived.

I can't believe it...

Tri-Lein, I apologize

for all the rudeness in the past.

We must save this world.

Yes, we will.

The Abyss Squad will go first to draw the attention of the combat fish.

Then the Benthos Squad

will deal with the eruption and disable the Devil's Horn.

The nine of you will go with El to stop Poseidon.

To all of you, may fortune favor your path.

We will meet again in the future that we save.

If we don't speed up, we'll miss the eruption.

We already have six people on board.

Please, Bucky!

If we're late, it'll all be for nothing!

The whole world is counting on you!

Look who's talking now.

We're underwater.

You don't need to wipe off dirt.

You ran as fast as you could.

Let me at least help you.

Miss Shizuka... you defend me and are so kind to me...

None of my previous owners ever...

You're not an owner. We're friends.

Friends...

Hm? A screw?

Hey! A screw!

Mm-hmm!

Mm-hmm!

Done!

What's this?

It's a charm... to keep you safe forever.

Hahahaha! Whoa!

Perfect! Now I can go anywhere!

Shizuka?

Yawn...

Hey! What were you two doing?

That's not fair!

Gian, Suneo, look!

What's this?

Pretty cool, right?

Miss Shizuka drew it for me.

To keep me safe forever.

It's a charm.

Lucky you!

No combat fish.

Looks like things are going well over there.

Is that the barrier?

Yes.

Whoa.

Beyond this is unexplored territory.

The domain of Atlantis.

Let me try this thing out.

Whoa!

Hm?

This is bad.

We can't go through head-on.

Tri-Lein mentioned...

Bucky, is there a hydrothermal vent cave nearby?

Found one.

That must be it.

This is it.

This place has temperatures in the hundreds of degrees and toxic gas.

Without the "Adaptation Light," we can't go through.

Bucky, look out!

The only path...

Use one of Doraemon's gadgets to move the rocks.

Gadgets...

Right! The "Chameleon Hat"!

That's it!

Let me see...

Alright, come in.

Report.

Devil's Horn launch preparations confirmed.

Estimated count... over 60.

We're about to reach the barrier.

Hey, if the barrier extends underground too...

we're all going to be obliterated.

It'll be fine.

Shizuka.

Yeah.

Yeah.

60 meters to the barrier.

Mom! 50!

40!

30!

20!

We made it through!

We did it!

Hey, look!

It's a graveyard of ships and planes!

They hit the barrier and crashed here!

So that's the mystery of the Bermuda Triangle!

Hey, something's coming!

The Iron Cavalry!

Creepy things.

Ah... ah...

Gian!

Achoo!

Ah! Sound!

They react to sound!

"Jet Mole"!

They're going back.

They think they've dealt with us.

Let's surface.

Why!

We'll be spotted!

Where they're going... must be the Devil's Castle.

Let's follow them.

Bucky, can you do it?

Bucky?

I want to, but... self-defense protocol activated.

My wheels won't move.

How can this be? We've come all this way!

Can't you do something?

No.

Without Bucky's speed, we'll lose them.

Maybe we can do what Tri-Lein did?

So... get caught on purpose.

It's risky, but worth a try.

Let me do it.

No! If El gets caught, everything falls apart.

Then I'll go.

Gian, are you serious?

There's got to be another way!

No time! I'll attract them with sound.

Wait! We can't guarantee you'll get away this time!

Ugh...

Ugh...

Shizuka!?

Tri-Lein was taken alive.

If it's a girl, the odds aren't zero.

That may be true...

We've been spotted!

They're coming back!

Everyone, get over here!

If it gets dangerous, I'll step in.

You all run.

Shizuka!

It's okay, Nobita.

We'll make it.

So... come save me afterwards.

Nobita, hurry!

Hmph.

It worked.

Miss Shizuka!

Shh!

Let's follow.

That's the Devil's Castle...

We finally made it.

Alright. Time to end this.

Everyone, use these.

Can we really stop this?

We can. As long as we work together.

See? When we work together...

I even finished my homework.

Nobita...

Compared to Nobita's homework...

saving the Earth is nothing.

Right, Suneo?

Well, I suppose...

I didn't say all that!

Is that "homework" really that hard?

Even El...

Hahahaha!

Let's go!

We'll save Shizuka and stop Poseidon!

Alright!

Ah.

Poseidon...

You're not the girl.

Why are you capturing girls and me?

I lack data related to females.

I must become complete.

Become my data.

This place is creepy.

Should we really be going in?

Whoa!

Could these all be...?

Iron Cavalry!

Here we go!

I'll take you all down!

Pow!

Take that!

Pow!

Gotcha!

Hmph! Yah!

Hah! Hoh!

This is bad! No time!

Yah!

The time has come.

The Earth will be turned into a dead planet.

No!

Leave this to Suneo and me! You go!

We have to hurry!

Defeat Poseidon! Save Shizuka!

Let's all go home together!

We have to! Let's go!

Nobita!

Forget me! You go!

I'm your opponent!

Please... make it in time!

El and the others can do it!

We have to hold out until then!

This is just volcanic activity.

Atlantis perished thousands of years ago.

Launch the Devil's Horn if Atlantis is threatened.

That is the program imposed on me.

Shizuka!

We're here to save you!

Nobita!

You made it this far.

Let Shizuka go!

Silence, human!

Whoa!

Nobita!

Nobita!

Are you okay?

Ah! The "Reflection Cloak"!

Heheh!

Thank goodness!

A machine? Interesting.

But I do not understand.

Why do you side with humans?

I'm not a machine. I'm a friend!

That's why we stand together.

Friend...

Friend...

Friend...

Poseidon! This ends now!

Nobita! Doraemon!

Friends... are indeed weak.

Is it over?

We all worked together... to get this far...

It's all over...

Are you crying? Miss Shizuka?

Bucky!

Bucky?

Don't cry, Miss Shizuka.

Bucky?

So that thing was bullying you.

How dare you! How dare you!

Unforgivable!

Bucky!

Why are humans so illogical?

People do things like that.

Even if they know, there's no clear answer.

If they think it's right, they just do it.

Are "right" and "answer" different?

Maybe not always.

If you feel in your heart that it's right...

"Heart"... is that different from the physical organ?

It's different.

I don't understand what "heart" is.

"Right" and "answer" are different...

That sounds like a program bug.

Ah.

Ah!

Hm? It stopped!

Nobita and the others did it!

It's a miracle!

Way to go, El!

Ugh...

Shizuka!

Hey... this...

Ah!

We have to get out of here!

This way!

Hurry!

It's over now, right?

Bucky? Come out.

Let's all go home together.

Why won't you say something?

What's wrong?

Say something...

Poseidon is gone.

All Devil's Horn missiles have been destroyed.

The world is saved.

Everyone, our victory over Poseidon

was thanks to the land-dwellers and Bucky.

Six friends working together.

And I learned something very important from them.

That is "heart."

The feeling of caring for others.

The kindness to protect your friends.

The warmth to never abandon those in need.

And these are also within ourselves.

The curse of Atlantis is lifted.

This is a victory of the heart.

And that is the power that drives the future.

Let us move forward together.

Toward a world where hearts are connected!

I wish Bucky could have heard this.

Nobita.

Nobita.

I'm sure Bucky felt it too.

Yeah.

Haha.

One day, I hope...

Undersea People and land-dwellers...

can all live together in friendship!

Goodbye!

That day will surely come!

Alright. Let's go home.

Nobita.

Yeah.

Goodbye. Until that day comes.

It's okay to laugh.

It's okay to cry.

Just live as your true self.

Everyone, did you enjoy the movie!?

Yeah!

Huh?

Wait, wait!

Huh? Huh?

Hot! Hot! Hot!

Whoa!

Whoa!