Murthy (Prashanth (actor)) earns his living taking the blame for the mistakes of other people, and so the jail is his second home. Dhanushkodi (Raghuvaran) has sworn to kill ex-collector Ramanathan's (Vijayakumar (actor)) son Santhosh (Praveen Gandhi), and so, Ramanathan has transferred Santhosh to Mauritius while telling the world he has run away. Wishing to save his son, he hires Murthy to act as him, hoping Dhanushkodi would kill him instead of his actual son. Murthy too accepts the gig since his lover Preeti (Jyotika) is Ramanathan's niece. In the climax, Santhosh supports Dhanushkodi for killing his father, but Dhanushkodi kills Santhosh. The film ends with Murthy taking the blame for killing Santhosh and surrendering himself to police.