The movie is about Velan, a responsible son of a village landlord. Adored by the villagers for his good deeds, Velan gets a shock when the landlord informs him that he is his foster son. A shocked Velan sets out on a mission to learn about his past. He reaches Chennai and learns that his family members were killed by the dreaded gangster Deva. He then vowed to kill him and his gang. In the name of Jambhavan, he starts to kill rowdies in society. Suffering a head injury, Velan loses his memory and is later adopted by the landlord. He realises that his job was just half-done. The remainder of the movie is how he puts an end to Deva and his men.