A vegetable vendor marries a girl against her father’s wish. The couple, with the help of their respective mothers, manage to hide it from the girl’s father till she gives birth to a child.

Narayanan (Namo Narayana) is the son of Central Minister Pandiyanar (G. Gnanasambandam). He makes money by corruption. One day, some goons try to kill a man in daylight. The man is lying in a pool of blood, and a local witnesses this and informs to the ambulance. The ambulance driver is Vishnu (Samuthirakani), a kindhearted man who has never let anyone he has taken in his ambulance die. Vishnu admits the man in the hospital, and he is saved. Narayanan is angry with Vishnu for saving his enemy, for which he replies that saving lives of people is his duty. Vishnu has a father (Vela Ramamoorthy) and sister Mahishasuramardini (Arthana Binu), who is stalked by Vicky (Vikranth), a drunkard and jobless youth who happens to be a friend of Vishnu. Vishnu convinces Vicky to make him attend the medical technician course. He completes it and saves people’s lives. Mahi has a friend who is stalked by Ravi, Narayanan’s brother, and she beats him in a bus.