Rocket Raja (Karthi) and his sidekick (Santhanam) are conmen in Chennai who cheat people in a variety of ways. One day as they steal a trunk, they find a little girl, Divya, asleep inside. As she wakes up, she declares Raja to be her father. This causes a misunderstanding with the girl Raja loves, Shweta (Tamannaah) who walks out on him. It turns out that Raja looks exactly like the little girl's widower father, brave and fearless police Officer Pandian (Karthi again) and hence Divya's confusion. The bane of the villains Bhauji and his brother in Andhra, he is also somehow in Chennai but is fatally injured when he comes to Raja and Divya's rescue when they are attacked. Raja now takes the dead cop's place, destroys the villains in his own corny way and reclaims Shweta as well.