AllMovie

Long before the advent of Roy Rogers, Tom Mix was regarded as the "king" of the movie cowboys. It is altogether fitting and proper, then, that Mix should be the star of the FBO sagebrusher King Cowboy. The story is set in Africa, where a band of cowboys, headed by Mix, embark on a search for their missing employer. They are accompanied in this venture by the boss' daughter, played by Sally Blane (sister of actress Loretta Young). Mix and his buddies are captured by a sinister Emir, while Blane is consigned to the evil potentate's harem. Staging a nocturnal raid on the Emir's weapons arsenal, Mix leads a counter-offensive against their captor, rescuing the heroine in the process -- and disrupting a "Wild West show" being staged for the bad guy's personal entertainment.