Stuck in Italy after B.A. destroys their plane, Faceman scams their way onto the cruise ship M. S. Tropicale by posing as the ship's doctor assistant. B.A. has to pretend to be wheelchair bound Mr. Allardyce with Murdock as his nurse, while Hannibal gets a job as a pool-boy. However, the Scarlatti family is hot on their trail and boards the ship. Hannibal proposes to have a costume party on the ship, so they can move about wearing disguises.