Thirunavukkarasu alias Arasu is employed in a temple by Venu Shastri at
Kumbakonam and stays in Pichumani's house. Arasu's calm nature and responsible behaviour impress the local people, and Shastri's daughter Meera falls in love with Arasu. One day, Arasu sees the news about the release of a convict from prison and violently kills the convict with the help of a few men. Meera and Shastri witness the murder. Arasu meets Shastri's family and discloses his past.
Past: Arasu is the son of Periyavar Nataraj, a kind-hearted gangster who is striving hard for the welfare of slum dwellers in
Chennai. Sabapathy is a business tycoon who goes to any extent to earn money. Trouble erupts between Sabapathy and Periyavar, following which Sabapathy is arrested and sentenced to imprisonment for his illegal activities, which led to the deaths of a few young girls. To exact vengeance, Sabapathy's brother Gunashekharan and his henchmen kill Periyavar and his wife Sivagami. Arasu gets enraged and swears vengeance against Sabapathy and Gunashekharan.
Present: Venu Shastri and Meera understand Arasu's position and decide to save him by not disclosing his whereabouts to the police. Despite all the attempts by the cops, Arasu successfully kills Sabapathy and Gunashekharan, then surrenders to the police and is sentenced to imprisonment. Five years later, Arasu finally reunites with Meera and leads a happy life. == Cast ==