Thoongaa Vanam

C.K. Diwakar (Kamal Haasan), a cop with a connection to the criminal underworld, finds his secret life exposed when he & his partner are caught stealing cocaine from a powerful drug dealer, Vittal Rao (Prakash Raj), a move that puts his son Vasu's (Amaan) life in jeopardy, after Rao kidnaps Vasu & holds him hostage. (Summary by iceblox)