Thangalakshmi, a wealthy woman, arranges for her daughter, Abhi, to get married to an NRI in her native village. However, a twist of events leads to Abhi getting married to her bodyguard, Kathiresan.

The story begins with Sarathy (Sundar) who is a tough and honest cop and given his straightforward nature, he is the thorn in the flesh for many antisocial elements and also the politicians. Due to this, he keeps getting transferred from time to time, however, Sarathy has no qualms about it since he is happily married with a lovely wife Ganga (Ragini). Sarathy's life however takes a turn when he arrests a corrupt MLA (G M Kumar) and his men which leads the politician to quit the field. He vows revenge and kills Ganga and their two children's and also frames Sarathy in a case. But his wife escapes and Sarathy admit her in a hospital in serious condition. From then on, he begins his corrupt acts and in such a way that the entire society begins to loathe the police force. Saami then strikes hard at the former MLA who kills Ganga and what happens from there forms the rest of the story.