Raghavan (Kamal Haasan) is an honest cop in Tamil Nadu. His wife Kayalvizhi (Kamalinee Mukerji) dies in a violent incident. Raghavan is deputized to investigate the murder of Rani, the daughter of his colleague Arokiya Raj (Prakash Raj) in a remote village in Tamil Nadu. Arokiya moves to New York after his daughter's murder.