Rock On!! begins in Mumbai, with the rock band Magik, in 1998. Joseph (Joe) Mascarhenas (Arjun Rampal) is the lead guitarist who feels the necessity to prove his worth as a musician. Aditya Shroff (Farhan Akhtar) is the lead singer who rebelled against his well to-do family to play music. Rob Nancy (Luke Kenny) who plays keyboards and Kedar Zaveri a.k.a. KD/”Killer Drummer” (Purab Kohli) comprise the remainder of the band. After a competition is announced by Channel V, they decide to enter, as the winner will be offered an album contract and at least one music video.