Vijay, a Tamil professor, is in love with Uma, a lawyer. Along with Ravi, he fights to put an end to prostitution and the production of illicit liquor in their locality.

A professor Vijay (Rajnikanth) irked by the shady going-ons in his neighborhood thanks to a local thug Anburaj and his Mohanraj (Satyaraj), galvanizes citizens into carrying out a campaign against the duo's underworld businesses. This prompts Mohanraj to vicious revenge, which Vijay responds to by turning vigilante. A cameo by Bhagyaraj as the police inspector Singaram sent to bring in "Raabin Hood" the vigilante.—Joyojeet Pal