After being found innocent on a charge of chicken stealing, the Stooges attempt to catch a live fish from a pet store aquarium tank. A beat cop (Bud Jamison) catches them in action and gives chase, forcing the boys to pose as plumbers to avoid being incarcerated. The Stooges manage to destroy the entire plumbing system in the home in grand fashion. Curly attempts to repair a leak in the upstairs bathroom and ends up constructing a maze of pipes that traps him. Larry digs up the front lawn in search of the water shutoff valve. In addition, Moe and Curly end up connecting a water pipe with another nearby pipe housing electrical wires, leading to water exiting every electrical appliance in the mansion. When a hostess invites her guests to watch Niagara Falls on her new TV set, the whole company gets doused with water.