Aegan

Aegan is a 2008 Tamil action film directed and cowritten by Raju Sundaram and produced by Ayngaran International based on the 2004 Shahrukh Khan starrer Main Hoon Na. It stars Ajith Kumar, Nayantara, Suman, Jayaram, Navdeep and Piaa Bajpai.

Aegans story is based around Shiva Ajith Kumar, a CBI officer, and his efforts to foil the terrorist John Chinnappa Suman. Major Shiva is simultaneously attempting to mend relations with his fathers estranged first wife and his halfbrother Narain Navdeep. Complications ensue.Major John Chinnappa is a scientist who had created tablets by operating on human guinea pigs. His ploys have always been controversial but inconclusive due to the lack of witnesses. However, an exgang member, General Ram Prasad Devan, became a police approver and is on the verge of revealing Chinnappas ploys to the police. However, he is on the run to avoid charges. The case falls to Lieutenant Karthikeyan Nassar, Major Shivas father, who had ordered his decommission, who assigns his son to go and help solve the mission. ........

Source: Wikipedia