“小鱼”罗伯特·菲什曼（雷恩·威尔森 Rainn Wilson饰）是名对摇滚极有热情的鼓手，他最大的幻想就是能成为一名超级摇滚巨星。可就是这个极度活跃一心玩儿摇滚的家伙，居然被自己组建的乐队毫不留情地除名了。罗伯特的摇滚之梦瞬间破灭了。二十年后，罗伯特侄子的高中乐队“A.D.D”要寻找一名新鼓手，受过伤害的他此时却是心灰意冷。可对于摇滚的热爱却将他们越拉越近，终于，罗伯特重操旧业，拿起尘封已久的鼓棒，惊艳四座。最终，他打败了以前的乐队，重新拿回“摇滚之王”的宝座。 　　本片是音乐天才泰迪·盖格的首部电影作品，更有雷恩·威尔森的“裸体演出”。The Rocker tells the story of a failed drummer who is given a second chance at fame. Robert "Fish" Fishman is the extremely dedicated and astoundingly passionate drummer for the eighties hair band Vesuvius, who is living the rock n' roll dream until he is unceremoniously kicked out of the band. Twenty years after his rock star fantasies are destroyed, just when Fish has finally given up all hope, he hears that his nephew's high school rock band A.D.D. is looking for a new drummer. They reluctantly make him the newest member of the band, giving him a chance to reclaim the rock God throne he's always thought he deserved, and taking the young band along for the ride of their lives.