In the hills and forest surrounding a horse-breeding ranch, an unbroken wild mustang poses a constant challenge to the owner and his hand. Despite repeated attempts to kill the horse, the owner and hand are unsuccessful. Cowhands and the owner's sister believe the mustang can be captured and tamed, making it a valuable asset to the ranch.
Mustang!
A feral mustang, Autumn Moon, poses a persistent threat to the operations of a horse-breeding ranch, testing the patience of the owner, Milt Swift, and his hired hand.
