 Johnny (Louis Lettieri) is a young Indian boy who falls heir to thousands of wild horses when his adoptive white father is murdered by henchmen of the town s leading citizen, Grat Hanlon (Clayton Moore). With the aid of his protector Steve Reynolds (Charles Starrett), he acquires an Army contract to deliver 300 horses a month to the cavalry. Hanlon, desiring the contract himself, and his men set out to keep the contract from being fulfilled.