In the past, the honest military officer Jeevadurai was killed by Govindan. Thereafter, Rajaratnam, Jeevadurai’s son, was brought up by D.I.G. Pandidurai. A few years later, Rajaratnam marries Devaki and they then have a son. Like his father, Rajaratnam becomes a police officer. In Shanthi Nagar, Govindan, who is now known as Kocha, controls the city and the people are afraid of him and his henchmen. His adopted father Pandidurai transfers Rajaratnam to Shanthi Nagar.