The Flintstones and the Rubbles are spending their vacation in the desert looking for Uranium. They arrive at an authentic Western Ghost Town, and Fred finds that the Sheriff is one of his school friends. He offers the job of "Sheriff for a day", but the catch is that three brothers are coming to town by train to shoot the sheriff, whoever he is. The whole town is hiding the lie to Fred while he is strolling around town. But he discovers the truth sooner or later, and has two options: leave town or face the criminals...