A rich estate owner is killed by his second wife and her brother Aadimoolam (Radharavi). The estate owner’s son Raja (Rajinikanth) returns from the USA and learns of this. In order to bring the culprits to book, he makes his friend Sethupathi (Janagaraj), a rickshaw puller, act as Raja. But soon, Aadimoolam learns of this and kills his own son and frames Raja as the killer. Raja is sentenced to death. In between, Raja loves Senkamalam (Radha), sister of an employee in his estate. in the same village where Raja lives, there exists his lookalike, Chinnaraasu (Rajinikanth again), whose aim in life is to wed his sweetheart Lakshmi (Nadia). Raja escapes from jail, meets Chinnaraasu and makes Chinnaraasu take his place in jail. After many twist and turns, Raja brings the culprits to book. At the end, Raja marries Senkamalam and Chinnarasu marries Lakshmi.

Subramani (Murali), the college leader, falls in love with Meenakshi (Ranjitha), but she requests him to complete her challenges to accept his love. Subramani succeeds her challenges, and when she asks him to kiss her in public, he is arrested by a police officer (Radha Ravi). Aruchami (Vijayakanth), Subramani’s brother, the respected village chief, lives with Thayamma (Revathi).
In the past, Subramani’s mother died during Subramani’s childbirth. Aruchami and Thayamma got engaged when they were children. They stayed unmarried to take care of Subramani.
Subramani is later released from jail. Meenakshi’s uncle (Kazan Khan) wants to marry her, and he then beats up Aruchami. Later, Thayamma decides to work in Meenakshi’s house to spy on her. Meenakshi admits to Thayamma that she is in love with Subramani. Meenakshi’s uncle agrees for Meenakshi and Subramani’s marriage. Finally, Subramani and Meenakshi get married, but they discover that Thayamma has died.