After being hit by rustlers, a group of Montana ranchers asks the governor to send state rangers for protection. State Ranger Rocky Lane becomes involved in a mystery surrounding a gang of horse rustlers and a young rancher who is blamed falsely for a killing. Lane helps uncover the real killers and unmasks the ringleader of the rustlers.

• Republic Pictures
• Allan Lane
• Black Jack
• Chubby Johnson
• Roy Barcroft
• Claudia Barrett
• Arthur Space
• Myron Healey
• Morton C. Thompson