The movie revolves around two men with a similar passion- music. AJ (Bobby Deol) is playing a ruthless guy with a manipulative frame of mind.He has reached where he is through sheer dint of slog and hard work. He is used to winning, he revels in it and will never allow anybody to overtake him. Reggi (Upen Patel) is a talented and upcoming singer who is struggling hard to get noticed.Young and hugely talented, he hungers for what AJ has, he craves to be where AJ is. Ruhi (Kangana Ranaut) is an aspiring singer who looks up to AJ but she has fallen head over heels for Reggi. Sheena (Celina Jaitley) is a gorgeous and ambitious PR professional. Sheena is the one who goes all out to promote Reggi. There is a lot of drama in this part of the flick as the story involves a lot if emotions all mixed into one musical drama Shakalaka Boom Boom. Eventually, music emerges as the sole winner in the film. <br>