Tamizhselvi, a little girl, is the darling of the Kathiresan household. She is fond of her pet rooster Paapa, but her grandfather Kathiresan plans to offer Paapa as a sacrifice to their god in the interest of his family. What happens when the rooster goes missing?

Three strangers, who were cheated by a three-member fraud gang, hatch plan to take revenge on their leader, and go to his home around same time. All of them get the shock of their life when they find someone murdered at the home.

A resident in Ooty named ‘Petition’ Pethuraj reopens a case from 2004 that involved a serial killer ‘Psycho Jyoti’ who was convicted for the kidnapping and murder. Venba, his daughter and a passionate lawyer, seeks to unveil the truth.