The story follows the life of Rohit Mehra Hrithik Roshan, a scientist, and Krishna Mehra a.k.a. Krrish Hrithik Roshan, his superhero son, who face an elaborate conspiracy orchestrated by the evil genius Kaal Vivek Oberoi and his female accomplice Kaya Kangana Ranaut. In the process, Krishnas pregnant wife Priya Priyanka Chopra is kidnapped by Kaal and the formchanging Kaya takes her place at the Mehra home and eventually falls in love with Krishna.

Cast: Hrithik Roshan, Priyanka Chopra, Kangana Ranaut, Vivek Oberai Rakesh Roshan