Build a movie plot around this: What was KD to the band "Killer Drummer"
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.After they win the competition, the band has to go through some sacrifices while signing the contract. Joe feels the most slighted when his song, which he wrote for his girlfriend, Debbie (Shahana Goswami), and which was the only slow track in the entire album, is excluded from the track list to make space for a random remix song. Debbie is also rejected as the band's stylist without even being called for any demonstration. Later, when the cameramen focus only on Aditya during the filming of the music video, Joe becomes furious at the director and Aditya before leaving with Debbie. Aditya, who failed to notice that anything was amiss, is shocked and abandons music and his girlfriend Tania (Nicolette Bird) leaving a note for her. "Magik" thus disbands and its members become estranged.Ten years later, Aditya is a high-powered executive of an investment banking firm. His wife Sakshi (Prachi Desai), hoping to relieve his habitual resentment, decides to gift him a gold-chain wrist watch for his birthday. K.D., who now works for his father's jewellery business, overhears Sakshi talking about Aditya at the jewellery shop, and introduces himself. Sakshi later conveys the meeting to Aditya who denies knowing K.D. When Sakshi finds a box filled with Magik's photos, she invites K.D. to the birthday party, telling him she wants to reunite Aditya with the band.K.D. meets with Rob, who now makes a living composing jingles for advertisements. Together, they...