The movie opens in Mumbai, where a man with a briefcase exchanges it in a crowded hotel lobby with another man. The second man takes the case upstairs and hands it to a third in a hotel room. The third bolts for a waiting car, but two pursuers close in. The driver speeds away, stops, and the man who carried the briefcase is shot in the head as the car bursts from the hotel grounds. The briefcase disappears into the night, its contents a seed for the twists to come.
A year later, in Kerala, four young men—Mahadevan, Mukesh; Govindan, Siddique; Appukuttan, Jagadish; and Thomas Kutty, Ashokan—live in a modest housing colony in Kochi called Harihar Nagar. They are unemployed bachelors with a shared focus on women, charm, and the next tall tale they’ll tell themselves about life and luck. Their days drift between the small pleasures of friendship and the bigger dream of romance, all wrapped in the lighthearted chaos of their neighborhood.
Maya, Geetha Vijayan, a girl from Kannur, and her grandparents move into Harihar Nagar as new neighbors. Maya’s beauty instantly draws the attention of the four, who begin to spy on her to learn more about her. One night, Mahadevan and Appukuttan try to watch her from the shadows as she bathes, but her grandmother—Maya’s grandmother, Philomina—spots them and chases them away with a scream. Each attempt to impress Maya backfires, exposing their immaturity and the comic fragility of their schemes.
The group discovers Maya has come to Harihar Nagar to learn about the death of her brother, a boxer named Sethumadhavan, often called “Sethu,” whom she suspects did not commit suicide. Maya visits Andrews’s mother, a friend of her brother, and asks for help in uncovering the truth. The four men pose as Sethu’s friends to gain access to information; they manage to obtain a photograph of Sethu by telling Andrews’s mother they need it for the colony’s sports club. Maya sees Sethu’s photo at their home and begins to believe that the four men are somehow connected to him.
At the boxing club, Thomas Kutty pretends to be a boxer, knocking down the other three men and exposing the ruse. He nearly reveals the truth about Mahadevan, Appukuttan, and Govindan Kutty, calling them simply pickpockets. The four hatch a plan to keep Maya at a distance by spinning a story about Sethu having had an affair, asserting that the bike-owner’s henchmen are connected to the girl’s parents. They stage tears and sorrow to sell the lie, and Maya buys into their ruse.
Honai, a menacing figure tied to the shadowy motives of the past, kidnaps the four under the pretense of retrieving the missing briefcase and promises their release in ten minutes. Meanwhile, Maya, determined to uncover her brother’s fate, learns about Annie Phillip, a friend of Sethu who has since become Sister Josephine, a nun at a convent. Annie reveals her history with Sethu, and explains the tangled web of vengeance that connects Andrews’s father to a murdered man who built a fortune on stolen money. Andrews later dies on a beach, and Sethu returns to Bombay with a new briefcase, which Annie receives. Back in Bombay, Sethu hands Honai a briefcase that, when opened, is found to contain bricks. Enraged, Honai kills Sethu, while Annie remains unaware of the four men’s innocence and tells Maya that they are Honai’s gangsters.
The four friends manage to escape the pursuit, but Honai’s forces close in, and Maya and her grandparents are kidnapped again. The police are alerted, and the truth behind the misdirections begins to surface. Andrews’s mother learns of her son’s death and the role Annie played in the deception when she receives the real briefcase. Honai comes to Andrews’s mother’s home, and a fuse is cut—lights go out, gas fills the room, and a misdirected flame near the stove leads to Honai’s own fiery demise.
In the end, Maya returns to Kannur with her grandparents, while the four friends finally lay eyes on the real riches inside the opened briefcase. The loot symbolizes a mix of luck, moral ambiguity, and the long arc of their youthful schemes finally catching up with them. The closing moments leave Harihar Nagar with a sense of renewal, even as its four explorers reckon with what they’ve learned about truth, trust, and the price of chasing shortcuts—before slipping back into the everyday rhythm of their neighborhood, hopeful for a brighter, more honest future together.