Jackie Chan plays the part of the class clown in a shaolin temple whose deadliest secret is stolen. All is lost until Jackie's character discovers dancing blue ghosts with bright red hair who haunt the library.

Twins, separated at birth, end up as a Hong Kong gangster and a New York concert pianist. When the pianist travels to Hong Kong for a concert, the two inevitably get mistaken for each other.

Cousins Thomas and David, owners of a mobile restaurant, team up with their friend Moby, a bumbling private detective, to save the beautiful Sylvia, a pickpocket.