Rajnikant , Sathyaraj , Ambika , Sharada
Bharath (Rajinikanth) a young man who is unknown who is his father. Shanti (Sharada) mother of Bharath tells him about his father at her deathbed.
Gopinath (Sathyaraj) is a rich young man,who comes for Paapampatti village for his construction work. He sees Shanti an innocent village girl and tries to impress her by pretending innocent. She trusts him fully and allows to him cross the ultimate limit. Gopinath leaves the village promising that he would return soon to marry her. Shanti finds that she is pregnant and also hears that Gopinath is about to get married to another woman. She visits Gopinath but he insults her badly. Shanti challenges him saying that one day her son will question him and make him confess the truth about himself to whole world and leaves the place. Shanti requests Bharath to fulfill her challenge and dies. Bharath accepts the challenge of making Gopinath to confess the truth by next year August 31 the death day of his mother.
Bharath leaves for the city and finds out his father. He meets Gopinath as a some strange man and uses Gopinaths money to start his own venture in the construction field. Both Bharath and Gopinath become enemies and both of them try to overtake each other in illegitimate way. Bharath once helps a girl from goons and takes to her home and finds that the girl is Pushpa,daughter of Gopinath and is his sister. Bharath wins the affection of Mrs.Gopinath as her son. He arranges for marriage of Pushpa with the son of a wealthy man Kumeresa Gounder who helps him to fulfill the challenge which he have against Gopinath. Bharath also uses the love relationship between his brother and his friends sister to corner Gopinath. Bharath uses every possible ways to blackmail and torture Gopinath to make him realise his mistake but Gopinath does not reciprocate instead becomes more anger.
Bharath invites him to inaugurate his orphanage on August 31, the date when he planned to fulfill his mothers wish. Gopinath is very anger on Bharath and hires a local goon who once was his enemy and now to Bharath to kill him in the inaugural function. Bharath reveals his mothers identity in the function and waits for Gopinath to accept his mistake.
Did Gopinath recognized who Bharath is and did he accept him as his son forms the rest of the story.