Clark & McCullough are arrested for disturbing the peace. They steal the police car and return it to the station. The new police commissioner believes that they are real policemen and they get back the patrol car. Out on the beat, the duo chase women rather than criminals, just like real cops.

Steven Bancroft, a young officer in the U. S. Calvary, is given the assignment of ensuring that dirty-work by agents of Spain, Mexico or Russian aren't going to keep statehood-for-California from becoming a reality. Bancroft uses his guns to settle any debates regarding international laws.

A train known as the Iron Mule is loaded with passengers, and starts off on its trip. Along the way, the train faces numerous obstacles and delays. The engineer is prepared for most of them, but the real challenges come when the train is ambushed by Indians.

A young waitress falls for the son of a railroad tycoon, and finds herself hobnobbing with the rich when he invites her to spend some time with he and his family in Palm Springs.

Buster clowns around in a blacksmith's shop until he and the smithy get in a fight which sends the smithy to jail. Buster helps several customers with horses, then destroys a Rolls Royce while fixing the car parked next to it.