When an honest cop, Vijay Kumar's family is ruthlessly slaughtered by a politician and his aides, he decides to change his identity and commits his life to bring his daughter up in a serene atmosphere. But some freak events end up compromising his identity and what he does to save his daughter and avenge the death of his family unfurls as Theri.

A violinist experiences paranormal experience in his flat after a death of a girl who he tries to save due to accident. Later he realises that actually the spirit is helping him and he tries to find out who killed the girl by accident.

Sriram is concerned only with spending money, until he meets Dia, a principled activist. Now he's determined to prove himself worthy of her affection.