The movie revolves around two powerful gangs in Chennai, one led by Chinna (Prakash Raj) and the other by Periyavar (Raghuvaran). Enmity prevails between both gangs, with frequent clashes happening as one gang tries to overpower the other. One day, when Periyavar's gang tries to kill Chinna, he is saved by Sekar (Vikram (actor)). Chinna meets Sekar on a few more occasions and is impressed by his courage. Chinna feels Sekar to be his resemblance as he too possesses similar characteristics. Sekar reveals that he follows Chinna right from his childhood and adores him as a role model. Sekar joins Chinna's gang, and with his help, Chinna overpowers Periyavar in the city. Sekar wins Chinna's trust, and both get close to each other. This brings up jealousy to one of Chinna's gang men (Shafi (actor)), and he hates Sekar. Sekar arranges Chinna's wedding with Padma (Lakshmi Gopalaswamy), knowing that both were in love for each other. Chinna decided not to express his love after becoming a don, but they still get married. Meanwhile, Sekar befriends Shalini (Trisha Krishnan), and love blossoms between them