In the holy city of Rajesvaram, a young boy named Nandha lives with his adulterous violent father and his deaf-mute mother (Rajshri). When his father attacks his mother, Nandhaa, in a violent rage, attacks and murders his father. He is placed in a mental asylum where he grows up. His mother is unable to forget the smile on his face over his father's corpse, and is unable to forgive him. She never visits him in the asylum.
Years pass. Nandha (Surya), now grown up, seeks out his mother and little sister. He repulses his mother and she pushes him away.
Nandhaa turns to Mukhiya (Rajkiran), a respected elder in the village instead. Mukhiya is a man who has no respect for the law -- only for the inner goodness of his heart. He considers himself an avatar of Vishnu, come to rid the city of evil. And he embraces Nandha as a son. Nandha immediately reciprocates that love, finally getting affection. He is ready to kill and die for Mukhiya.
Mukhiya harbors Sri Lankan refugees in the town. One of these refugees is Kalyani (Laila). Kalyani and Nandha fall in love, slowly but surely, and their marriage is planned.
At this time, Mukhiya is murdered by his own son-in-law. An enraged Nandha discovers this and picks up a weapon again, ready to murder again. Will he? Or has he "reformed"? Will his mother ever forgive him? Will he and Kalyani ever be happy together?
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