Porky is having trouble getting rid of a wise-guy mouse. He first tries with a cat, which is immediately rocketed from the house, then sets loose a mountain lion, which is quickly stuffed and mounted. Finally, he hires a mobster cat (equipped with brass knuckles, TNT, axes, etc.), who is simply conked out with a bowling ball to the head. As a last resort, Porky builds a mechanical cat. In short order, the rodent gives the robot an electric shock, replaces its head with a toaster, and, as a coup de grace, blows up the mechanical cat- along with Porky’s house.