A tale of horse thieves and racing scams with regal stallion Rex and Rin Tin Tin, Jr., the best bred stars since the Barrymores. When the wonder horse is nabbed from the ranch, Rinty and his heroic owner John Custer are thrust into a battle against a gang of no-good varmints. With Ben Turpin, Lucille Browne, Richard Cramer. 12 chapters. Standard; Soundtrack: English.