When his parents have to go out of town, Dennis stays with Mr. and Mrs. Wilson. The little menace is driving Mr. Wilson crazy, but Dennis is just trying to be helpful. Even to the thief who's arrived in town.
Mr. Wilson's ever-present annoyance comes in the form of one mischievous kid named Dennis. But he'll need Dennis's tricks to uncover a collection of gold coins that go missing when a shady drifter named Switchblade Sam comes to town.