Karky (Pa. Vijay) is the son of Arokkyasami (Nassar), who wants to win freedom of his people from the shipbuilding owner Rajanayagam (Suman) and his wife Sena (Namitha). Meera (Meera Jasmine) is Rajanayagam's sister. She is a very kindhearted woman who helps Karky. With Meera's help, Karky starts a war against Rajanayagam. Rajayanagam is not only cruel and stone-hearted, but also very cunning and a big fraud. He and his wife play a cunning game and cheat Karky. Karky's mother Valliammai (Khushbu) is initially reluctant to wage war against evil openly as she is afraid of bloodshed. She wanted all workers to live and not die. Rajanayagam crosses all the levels of cruelty. There is no way the situation can be handled peacefully, so Valliammai asks Karky to open a full-fledged war against evil. Then the final war starts between good and evil in which good wins over evil.