Mahadevan, a call taxi driver lives with his wife Viji and their 5-year-old son Prabha in Kanchipuram district. But he lives a secret double life as a hitman for a local politician Muthuraj to support his family. When enemies of Maha try to kill him, he and his wife decide to get out of that place. But they are required to get their pending money from Muthuraj. Meanwhile, Muniraj (a look alike) the twin brother of Maha who lives in Erode gets into trouble because of his physical similarity with Maha. The rest of the movie narrates the flashback of how they got separated and the aftermath.