Sakkarai is a mentally ill boy and an orphan. Most of the villagers take advantage of his innocence. Sakkarai works under his chief Thevar, who has two wives. After a dispute with his first wife Lakshmi, he marries another woman. Sakkarai develops a soft corner for Thevar's daughter Thamarai. Aasari, who has been humiliated by Thamarai, brainwashes and manipulates Sakkarai. So Sakkarai has a physical relation with Thamarai. Later, Thevar finds out their relationship and beats the innocent Sakkarai. Later, Thevar arranges his daughter's marriage with Senkodan, a drunkard. What transpires later forms the crux of the story.