Vettaiyaadu Vilaiyaadu movie is about Raghavan (Kamal Haasan) who is an honest cop in Tamil Nadu. His wife Kayalvizhi (Kamalinee Mukherjee) who dies in a violent incident. Arokiyaraj (Prakash Raj) who is his colleague. Raghavan is deputized to investigate Arokiya Raj's daughter Rani's murder in some remote village in Tamil Nadu. Arokiya Raj shifts his base to New York after his daughter's murder.