Two bumbling plumbers are hired by a socialite to fix a leak. A case of mistaken identity gets the pair an invitation to a fancy party and an entree into high society. As expected, things don't go too smoothly.

In the gay '90s, cardsharps take over a Mississippi riverboat from a kindly captain. Their first act is to change the showboat into a floating gambling house. A ham actor and his bumbling sidekick try to devise a way to help the captain regain ownership of the vessel.