 An illegal trafficking of a soda-canned bomb between a crooked Hong Kong cop and two Japanese con men goes bad after an associate decides to go against their plans. It brings together three unlikely trio mixed into the plot: a suave rock scientist (George Lam), a wisecracking taxi driver/police officer (John Sham) and an overzealous biker (Maggie Cheung), who must team up to locate the missing bomb before it falls in the hands of the con men.