Billa

DSP Jayaprakash aka Jay (Prabhu) has long been on the trail of dreaded criminal David Billa (Ajith) & finally kills him by accident. To catch the whole of Billa's gang, along with his boss, the mysterious Jagadish, Jay gets Velu (Ajith), Billa's lookalike, to pose as Billa & infiltrate his gang. In an encounter, Jay gets killed, & the blame falls on Velu, whom the cops assume to be Billa. Velu goes on the run, with the cops & Jagadish's gang, who learned that he isn't Billa, on his tail.