Thulasi (Thananya) comes to Muttam village along with her grandmother (Nagamma) after her parents desert her. She joins a government school in the village to pursue her studies. Enters Koochan (Ramakrishnan), who instantly falls for her. Koochan's mother Chandra (Agavamma) helps the poor Thulasi to pursue her studies. However, coming to know about their romance, Agavamma insults Thulasi and her grandmother and drives them out of the village when Koochan is out on a school tour. A shocked Koochan returns only to meet with a road mishap. Meanwhile, Thulasi, who seeks refuge in a family at Tuticorin, is forced to marry a rowdy named Dharman (Tharun Chatriya). On the day of their marriage, Dharman gets arrested by the police. His wayward lifestyle invites trouble, and he eventually gets arrested for murdering a youth. An annoyed Thulasi returns to Muttam, only to see that Koochan has lost himself in liquor after his love failure. Meanwhile, Koochan resolves to set Thulasi's life right by helping her grandmother in getting Dharman out in bail. Eventually, Dharman returns to Muttam but ends up murdering another person in his drunken state. Koochan takes the blame on himself and ends up getting beaten up by the village people and arrested by the police. When Thulasi tries chasing the jeep in order to confess her husband's mistake and release Koochan, she meets with an accident. The movie ends with both their dead bodies being buried together and Dharman being arrested for his crime.