Maasilamani aka Maasi (Nakul) is an orphan living in a lower middle class colony. With a heart of gold, he is a popular guy who takes up local issues, fights for them, and is considered a rowdy by those who do not know him. Enters the heroine Divya (Sunai

A do-gooder man, who fights for the rights of the poor but is known as a rowdy, proposes marriage to a girl and she rejects him. Determined to woo her, he tries to win over her family but another admirer of hers tries to sabotage his image.

Officer Muthukumar fights against a dreaded don Gurumurthy, but soon he gets embroiled in a brawl with the corrupt system, following the death of Gurumurthy.