A rancher has roped and tamed Rex, King of the Wild Horses, who becomes friends with Rinty, a police dog. The rancher is framed for murder and the man who falsely accused him, is now out to steal Rex.
1. The Man Killer, 2. The Battle of the Strong, 3. The Cross-eyed Goony, 4. Avenging Fangs, 5. A Dead Man's Hand, 6. Horse-thief Justice, 7. The Death Stampede, 8. The Canyon of Calamity, 9. Robbers' Roost, 10. King of the Range, 11. Winner Take All, 12. The Grand Sweepstakes