Someone wants to kill Magpie Harper. Crash and Dusty arrive too late, Magpie Harper is allready dead.

In the midst of some friendly horseplay on their "Flying R" ranch, the Range Busters, Crash Corrigan, Dusty King and Alibi Terhune, are sobered by the arrival of a buckboard bearing their old friend Larry Meadows and his niece Dorrie Willard. Meadows seeks their aid against a gang of outlaws terrorizing his town. Ernie Willard, Dorrie'...

Having trouble with outlaws, Marshal Graham sends for his friends the Range Busters. Newspaper editor Ross, dissatisfied with Graham, forms a vigilante committee and puts Jim Dawson in charge not knowing he is the leader of the outlaw gang. Dawson then has his men frame Crash and Dusty for robbery and murder and then has them set out t...

A Phantom is murdering the hands at the Circle T Ranch. The Range Busters are recruted by the owner of the Circle T to stop the Phantom and discover his identity. (First film in the Range Buster series.)

Cowboy Larry O'Day and his sidekick Lucky Smith happen upon a distraught Barbara Hartwell, who is about to be arrested for the murder of her uncle. With Barbara behind bars, Larry is determined to find the real killer and soon finds himself in the middle of a mystery involving crazed German entomologists and a smuggling ring bringing C...