Auto-rickshaw driver Manickam (Rajnikant) is a do-gooder who avoids violence at all costs. Manickam romances rich kid Nagma, whose father is a criminal, and knows a dirty secret about his would-be son-in-law. Manickam's brother, a righteous police officer gets into trouble with the local goons, triggering a set of events that revive Manickam's old self.