Kangeyan (Rajnikanth) and his younger brother, Manickam, live in the city. Manickam falls in love with Mallika, the daughter of the village Panniar. Mallika's marriage is fixed with Dorai (Raghuvaran) but she refuses and eventually marries Manickam. A evil plot formed to kill Manickam succeeds and Mallika becomes a widow. Kangeyan is unable to see Mallika as a widow and decides to get her married again - to Pandian, a cart driver. Dorai intervenes and Kangeyan learns the truth behind his brother's death. Determined to get justice for his brother and his sister-in-law, Kangeyan sets out to expose Dorai.