Santosh was ditched by girlfriend, Priya, for an NRI and so he decides to have sex before he can fall in love with women. However, Priya comes back into his life and forces him to change his opinion.

A bride is captured by the people of the village who share the stolen property equally. Having shared the bride’s jewels, they also think about sharing the bride.

As a child, Paari (Atharvaa) lost his father who tried to stop the war between his native and neighboring village as they fought over sharing a pond water. Years later, Paari is a young man who returns from Singapore but the battle between two villages is still on. Mean while, Paari is in love with Thamarai (Anandhi), daughter of rich village man (Lal) who also owns the pond and is adamant not to supply water to the nearby village.

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.

Siva (Dhanush) is asked to help a friend in a love marriage. Siva kidnaps Pooja (Genelia D’Souza) on a mistaken identity from the marriage hall. When Pooja is kidnapped, her uncles (both are from the Gounder community) and their henchmen follow them.

Saroja is born in a very poor family and is raised by her mother. However, in order to raise her children, Saroja’s mother resorts to prostitution.

Kutty, a kind young man, falls in love with Geeta, but she does not reciprocate his love. He continues to love her even after learning that she is in love with Arjun, her college-mate.

Bhoopathy (Vijay) is a happy-go-lucky person who is very relaxed in life, as shown when he falls asleep in a train and misses his station. He goes to Villivakkam in search of Vishwanathan (Nassar), who is his father Mani’s (Manivannan) best friend. Kattabomman (Vadivelu) is Vishwanathan’s assistant who torments Bhoopathy right from the day they meet. Vishwanathan’s first daughter Priya (Sneha) initially hates Bhoopathy, and they are at constant loggerheads at each other. When Priya’s aunt (Suhasini Maniratnam) is going to leave, they again fight and the same old revenge story takes place. Soon, however, Priya falls for Bhoopathy. When Bhoopathy comes to know about this, he is reminded of his father’s words that he should not make him ask forgiveness to his friend under any circumstances. Although Bhoopathy also likes Priya, he controls his emotions and keeps silent. He tries to leave but is caught by Vishwanathan and is forced to come back. Priya receives a call from her friend to come to her wedding. On the insistence of Priya’s younger sister, Vishwanathan sends Bhoopathy along with them. There the groom Sriman (Sriman) makes him drunk and he reveals his feelings about Priya. They become friends soon. Then they all go to Black Thunder and a photographer (Pandiarajan) they meet takes a photo of Bhoopathy and Priya holding hands.

Surya (Ajith) has been brought up in the army training barracks in Wellington (Ooty), ever since his mother(Sukanya) handed him over as a baby to the camp brigadier (Nasser). She tells the officer the reason for her action but the audience is not allowed to hear it at this point. Surya grows up to be a patriotic youth and the best soldier in his class. He is about to complete his training in 3 months and leave to the border. He falls in love with Indu (Simran), the daughter of a senior army officer, who is visiting Wellington Camp. Indu’s parents accept her choice of husband and the family leaves to kashmir. Soon after, Indu’s father dies in a bomb blast while her mother loses her life on seeing her husband’s body. Not wishing to lose her husband too in war, Indu asks Surya to choose between her and the army. Surya then asks the brigadier to advise him, and the brigadier tells the story of his parents. His father Bomb Sekhar (R. Parthipen) was a very violent terrorist, who was sentenced to 3 years prison and death. His mother was a nun, who visited prisoners and chanted Bible verses to them.

Teenage lovers Ashok and Geetha are separated by their families. Years later, Ashok returns home from USA and gets engaged to Chaaru. But soon he has to deal with Geetha’s return in his life.

Prabhu(Prasanna), Ilango(Krishna), Sundar(Karthik), Priya and Indra are the best of friends at college, swearing to never lose touch with one another later in life. They manage to get jobs in the same company but Ilango, was whisked away to his village by his dictatorial father(Vijayan) and forced into marriage with Eeswari(Kanika). He then runs away while the friends assume that he is in Bombay with his new wife. A few years later the remaining four are still friends, working in the same company and even living in one house. Prabhu meets Eeswari on the train and without knowing that she is Ilango’s wife, falls in love with her. When the truth comes out she becomes good friends with the gang while they promise to find Ilango and reunite them.

A spoiled young heiress marries a poor man in order to inherit her grandfather’s property.