A demoted detective is given the opportunity to go undercover and take down the mob's most ruthless killer, but his life and only chance at redemption spiral out of control as he loses himself i...

　　痴迷脱口秀笑话表演的鲁帕（Robert De Niro 饰）梦想自己也能站在舞台上享受观众的欢呼，借疯狂粉丝玛莎（Sandra Bernhard 饰）创造的机会，鲁帕得以和脱口秀明星杰瑞交谈，鲁帕踌躇满志的自我介绍，虽然杰瑞敷衍了事，但鲁帕仍视自己为杰瑞的好友。为了能在心爱的丽塔面前出人头地，鲁帕不惜一些代价要获得与杰瑞同台表演的机会，另一方面杰瑞被鲁帕的纠缠搞到忍无可忍，将鲁帕与并不知情的丽...