Singarasu (Napoleon), a brave and influential man, protects the eight villages living next to the canal. Palaniyamma (Urvashi) is crazy about Singarasu, but Singarasu prefers her soft and sensitive sister Pandiyamma (Kushboo). Singarasu finally gets married with Pandiyamma.
Marimuthu’s (Manivannan) brother (Sukanraj) and Ponrasu’s (Ponvannan) daughter (Abitha) are in love. Ponrasu, the village chief, refuses for the wedding, so Singarasu decides to accommodate the lovers in his house and promises to unite them, but later the young lovers commit suicide. So Marimuthu and Ponrasu decide to take revenge on Singarasu. Singarasu, busy in his duty, neglects his wife and is unable to understand her feelings. One day, Marimuthu tells lies about Singarasu to Pandiyamma, and she commits suicide. All the villagers think Singarasu is the killer. Palaniyamma decides to live with Singarasu and he develops a soft corner for her. When Singarasu decides to marry Palaniyamma, a woman explains to him what happened before his late wife’s suicide. Pandiyamma was in fact killed by Ponrasu and Marimuthu. What transpires next forms the rest of the story.