Parents of first cousins, Sujatha and Raghu, decide that they will get the children married to each other on becoming adults. But Raghu becomes a troublesome character as he grows up.

The film opens with a man (Aravind Akash) and woman interviewing civilians’ thoughts on love and the opposite sex. After a mixture of answers, they cease their questions and the credits roll. The credits end as a boy, after being rejected by his girlfriend, commits suicide by jumping in front of a passing car. Karthik (Vinay Rai) walks off, disturbed, to his girlfriend Jhansi’s (Sadha) office. There, he is criticized by her for his antics with other women and his lack of passion for their love. She walks off, ending their relationship.

A disillusioned everyman, frustrated with the corruption he sees all around him, develops multiple personalities in order to restore justice.

Subramani poses as a goon to evict bachelor tenants from a Brahmin’s house but instead helps one of them kidnap his lover from her marriage. However, chaos ensues when he kidnaps the wrong girl.

The film is set in 1960s Chennai (Madras then). A police officer and a social worker give speech about ban of cigarettes in All India Radio. Then three men get out from a car . They were thieves and were headed by Eli (Vadivelu) a petty thief (who once aspired to become a police officer), who pretends to be a thief who has sold all his robbery items to a jewellery shop owner. The jewellery shop owner had no contact with him and his henchmen dressed as police take all the items pointed out and pretend to arrest Eli and loot the shop. He uses his tricks and loots many other places. One day he enters the house of retired police officer Mr. Rangarajan who had rejected him at the police selection. He loots everything except his photograph. When the current police I.G came there to meet Rangarajan, Eli pretends as though Rangarajan had vacated his house and he is performing rituals and not to disturb him. When the police officer meets Rangarajan on the way he is shocked to find that he had been tricked and Eli had looted the house.

The story is centered in a village where the parents of first cousins Sujatha (Sadha) and Raghu (Gopichand) decide that they will be married to each other when they become adults. As a child, Sujatha’s uncle gives her anklets, which she wears as she grows up. As they grow older, Raghu is caught smuggling money from his house. At school, Raghu beats up a kid for talking to Sujatha. They quarrel, and Raghu’s family leaves for another village. Sujatha grows to be an attractive college student, while Raghu becomes a good-for-nothing character. On her way to college, Sujatha meets Ravi (Jayam Ravi), a poor, charming, and enthusiastic young man. He asks her to wear her anklets to college again, and soon after their quarrels, they fall in love. Meanwhile, Raghu’s parents (Nizhalgal Ravi and Nalini), hoping that he will become a responsible person after marriage, decide to carry out his marriage with Sujatha. The story takes a turn when Sujatha’s parents (Rajeev and Pragathi) learn about her love affair with Ravi. On the day of her marriage, Sujatha elopes with Ravi, and the action heats up as they are chased by Raghu and his thugs. Finally, Raghu is defeated in a face-to-face combat with Ravi, and Ravi marries Sujatha.

Thirupathi (Ajith Kumar) is a straightforward young man who leads a happy life with his parents and younger sister. He happens to meet Priya (Sadha), and both fall for each other. Thirupathi’s sister is pregnant, and at the time of delivery, he takes her to a hospital. The doctor there expects bribe, but when it is not forthcoming, he neglects his duty; therefore, Thirupathi’s sister dies. Thirupathi comes to know that this is not the first instance in the hospital, and the doctor is his best friend Soori’s (Riyaz Khan) brother (Sampath Raj). When Thirupathi goes out to get Soori’s brother, Soori and his father do all that they can to protect him from Thirupathi. How Thirupathi gets his revenge on the people responsible for his sister’s death forms the rest of the movie.