A dishonest Indian agent jeopardizes the future of an Apache reservation started by John Cannon.

Capt. Albert Surtee threats the hungry reservation Indians harshly. John takes the law into his own hands and fires Surtee. He suspects Surtee has hired renegade Chief Cubero to start trouble and to steal government cattle. John and Billy Blue attempt to prove John's suspicions by exposing themselves to attack by Surtee and renegade Indians.