Priya is a crime journalist. She is investigating the rape and murder of a victim whose face has been disfigured through acid. Inspector Ashok is assigned to the same jurisdiction. He saves Priya from the murderer's henchmen, arrests the murderer and begins courtship with Priya. One day Arthanari, a house husband, comes to Ashok suspecting that his neighbor Ramesh may have murdered his wife after a loud quarrel.

Priya and Ashok stumble upon a little girl who happens to be the daughter of Ramesh. Investigations reveal that the girl's mother Thangam was cheated by Ramesh in the village. Ramesh and his girlfriend Rathna successfully kills Thangam and tries to do the same to the little girl but gets saved by Ashok. As the criminal investigation proceeds, Ramesh slowly removes witnesses by various unscrupulous means. What transpires later forms the crux of the story.