Original subtitles

Vijay Prakash is a fame-seeking Inspector and loves to be in the media limelight as he wants to undo hurdles in his profession due to the reputation of his absconding father Chandra Bose- a former spy who gets framed as a national traitor. Vijay is raised by his uncle Paavadaisaami, who is also a cop by profession, as his entire extended family commits suicide out of shame when the news of his father's treason goes public. Vijay's love interest Shalini, a lawyer by profession, was not amused by his craving for social media attention but sympathizes with him once he explains his stance.

Meanwhile, Vijay is assigned the mission of catching a mastermind, who has stolen a highly classified file containing background information of agents that have been working in the RAW since the 1980s. Viewing this as a golden opportunity to build his reputation, Vijay starts investigating the case and learns that a social activist named Sameera Thomas has stolen the file. Vijay tries to find Sameera with the help of her son, Timothy "Timmy" but finds that Sameera's corpse has been found and she was declared a national traitor. Taking the case personally, Vijay investigates and learns that Sameera was interrogated about a person named Sardar, but she did not reveal anything.

Through Sameera's laptop, Vijay finds that Sameera has been protesting against a water packaging company, run by a former NSA officer Maharaj Rathore, whose project One India One Pipeline is expected to unify and control the supply of potable water across India. As per the research information obtained from Sameera's laptop, the company has been producing toxic water, as a by-product, which contains carcinogens and other harmful chemicals. As a result of the drinking water, Timmy was diagnosed with sarcoidosis. Heartbroken, Vijay and Shalini learn that Sameera was heading to a train station to meet an accomplice. He finds her accomplice at the train station and manages to capture him, but the accomplice gets killed.

Amongst his belongings, Vijay checks a book that contains a destination address (which Vijay had previously seen with Timmy as he posted a letter to their relative Victor on the advice of Sameera) at the Chittagong prison in Bangladesh. Meanwhile, The RAW agency receives information about Sameera's letter, which is named CODE RED. Rathore contacts the NIA and tries to get the warden to finish off Sardar, but he manages to escape from the prison. Vijay finds a location from the accomplice's belongings, which is a petrol bunk with a secret tunnel. Vijay finds a file after a brawl with an assassin, who also came to retrieve the file. Going through the file, Vijay learns that Sardar is actually Chandra Bose.

Years ago in 1985, Sardar is working incognito, as a spy for RAW, by disguising himself as a drama artist and living happily with his family. Sardar falls in love with Indhra Rani (who also loved him, but later learns about his profession) and they get married, and their son Vijay is born. One day, Sardar received his next assignment to investigate the India-Pakistan border, where the agency learns about suspicious activities lurking at the border. Being a master-of-disguise, Sardar manages to escape with a photo and a type-written translated copy of a file, written in Chinese.

After detailing the file to his superior officers Rathore and Victor, they learn about China's plan to spread false news about poisoning the country's water through Pakistan and implementing pipelines to monopolize India's water supply through One India One Pipeline. They also learn that a mole, codenamed Laughing Buddha, in their agency, is helping China with the mission. Rathore and Victor send Sardar to track down Laughing Buddha. Sardar got in contact with another agent codenamed Cockroach, and deduces that the NSA Chief, P. K. Abraham, is actually Laughing Buddha. They managed to capture him in Bangladesh. However, Rathore gets consumed by greed and decides to eliminate Abraham.