The movie begins with two kids who fight with each other in a marriage hall. They meet after two decades, now Krishna (Prasanna) and Ramya (Laila) during a college cultural meet and again lock horns with each other. Fate brings them together in Chennai after a few years, again fighting with each other. Meanwhile, a series of events forces Krishna’s close friend Aravindh (Karthik Kumar) to come to India from the USA to get married. His parents arrange his wedding with Ramya. Ramya, who decides to get married to help her younger sister’s love, displays herself as a passive character who accepts whatever the life partner feel is right. On the contrary, she is bold, active, independent and assertive in nature. Knowing this, Krishna tries hard to let her true character come out. However, Aravindh stalls the wedding plans and returns to the USA as he finds Ramya as a person who does not think on her own and not independent. Mistaking Krishna for influencing Aravindh, Ramya locks horns with him.

He makes several bids to obtain employment but all goes in vain due to his poor language skills and inadequate educational qualifications. All his friends settle in life, but he continues to struggle in finding employment. Vasu has two faithful friends in Cheenu (Karthik Kumar), and Ganesh (Karunaas). His father (Raghuvaran), who is a teacher, is always critical of him for being an irresponsible person. This just added to his list of woes. At this juncture, Vasu catches a glimpse of a woman named Keerthi (Nayanthara), and immediately falls in love with her. He learns that she works for a software solutions firm. Luckily for him, Vasu finally secures employment in the same firm. Keerthi eventually turns out to be a short-tempered young woman. On a business trip, Vasu accompanies her along with two other colleagues (Jeeva and Manobala), to Australia. Here he reveals his feelings of love to her. She immediately turns him down, saying that she comes from an orthodox family, and her marriage has already been arranged with her uncle’s son. A depressed Vasu returns to India thereafter. Unable to see his son in depression, his father decides to meet Keerti. She abuses him for recommending his son’s love, and accidentally slaps both Vasu and his father. Later that night, Vasu’s father dies of a heart attack. In order to help change Vasu’s mood, Cheenu manages to persuade him to come along to his family house in the country. Coincidentally, on the train journey, Keerthi is revealed to be the fiancee of Cheenu. However, their grandfather’s (K. Viswanath) thoughts of getting them married earlier are put aside because Cheenu and Keerthi leave the house to have their own identity. This causes heartburn to their grandfather. With the passing of a few days, the parents of Keerthi and Cheenu decide to get them married to appease their grandfather. After several turns of events, Keerthi realizes that she is in love with Vasu instead. When Vasu asks her to forget him, during a midnight meeting, because he believes that it would create problems in their happy family, Cheenu himself overhears their conversation. During the wedding, Cheenu tries to force Vasu and Keerthi to confess their relationship to everyone who is present. But when they hesitate to do so, Cheenu stops the marriage himself, by lying to his elders that he has a secret wife in Chennai. When Cheenu comes under fire from his relatives, Vasu tells them the truth, and is driven out of the house. He is joined only by the grandma of the house, who agrees to accompany him as she reminds Vasu of his late father. In time, the rest of Cheenu and Keerthi’s family comes to stay with Vasu for a few days. But Cheenu’s grandfather refuses to enter the house, telling Vasu he is still angry with him, and needs time to change himself somehow. The movie ends when Vasu and Keerthi became a happy couple and live together happily.

Karthik, a young lawyer falls in love with Poongothai, daughter of a businessman Vijayakumar. Vijayakumar and Poongothai’s sister run a Multi-level marketing and are imprisoned for false accusations. Karthik brings Poongothai to his parents and seeks the permission from them – Nasser, a speech impaired person and Revathy, his mother. Karthik and Poongothai eventually get married after his parents consent.

Shiva (Prithviraj Sukumaran) is an energetic, enthusiastic college student. Being short-tempered, he gets easily provoked by the rich, proud Vasu (Karthik Kumar) and his sneering attitude. From glares and snarls to punches and fights, Vasu and Shiva do it all, even for unreasonable, petty things. Shakthi (Shakthi Vasudevan) stops their quarrels before they injure each other very badly. As he is friendly, kindhearted and cool-headed, Shakthi tries to bring Shiva and Vasu together on friendly terms, but in vain. Shiva, Shakthi, and their faithful friend Bala (Vishnu Priyan) stay together through thick and thin, and are always ready to voice out their views on behalf of the hostelites in the college. Shakthi’s father (Bhagyaraj) often visits his son in the hostel and is like a father to all of Shakthi’s friends. Meera (Priyamani), the daughter of an MLA, nurtures a soft corner for Shiva. She is brave enough to stand up to him and check him when he throws unnecessary tantrums. Shalini (Anuja Iyer), Meera’s friend, is a shy, reserved Muslim girl from a very strict family background. She is often preoccupied with her own thoughts. Karthik (Lollu Sabha Jeeva) is a total showoff who tries to humiliate Shiva and Shakthi, but ends up making a fool of himself.

Kartik, raised in the slums by his brother, is an engineering student. His father Jothi, who abandoned his family years ago, takes advantage of Kartik’s friend, Vishnu, for a drug peddling assignment.

Its a story about a retired man’s endeavor to build a house and the challenges faced by him. The film is a remake of the Bollywood cult film, Khosla Ka Ghosla. Sathyanathan has just retired and buys a plot. His son is against it and wants to go to New York. A gang tries to cheat him out of his land. His son then steps in to help him with the help of Daddy.