Prabhu (Dhanush) is a happy-go-lucky middle class family guy who spends time playing carrom in the streets with his friends Santhanam, Karunas. His father (Murali) and he keep falling into minor misunderstandings, and he indulges in a hopeless romance with a strange girl (Divya Spandana) who he meets at a bus stop. When he is caught in the act of stealing a pittance from his father for booze with his friends, Prabhu questions his father's responsibility towards his upbringing. His angry father gives Prabhu some of his savings and tells him to do something with his life. Prabhu purchases a Bajaj Pulsar bike instead and finds a job. The bike eventually saves his life from a freak incident and gets lost, subjecting him to interminable anguish as he searches for his bike. When his family members asks him about his bike, he tells them that he has given it for dealer service.