The exploits of Champion, a wild stallion who befriends twelve year-old Ricky North (played by Barry Curtis) in the American Southwest in the 1880's. Although Ricky, who lived on his Uncle Sandy's (played by Jim Bannon) ranch, had a magnetic attraction for trouble, he was always rescued by the Wonder Horse, aided by the boy's other bosom companion, a German shepherd dog named Rebel. - Andy Barsby