A group of movie makers arrive in Africa to make a film about jungle wildlife.

Jungle Jim must protect rare pony-like animals whose glands produce a powerful narcotic. On the way, he fights a giant spider.

Zara Montalve, half Spanish and half America, returns to her native California in time to see her parents murdered for their hacienda and gold by Sheriff Jim Harding and his gang. Posing as Lola Belmont, an American visiting from Detroit, teams up with Joaquin Murietta, posing as Carlos Del Rio, to form a Robin-Hood type band that takes vengeance on the gang and restores stolen gold to its rightful owners, aided by militia leader Dan Hinsdale.

Clay Hardin, a Deputy U.S. Marshal, is about to turn in his badge and take the job as the territory's Indian commissioner until the notorious Ben Thompson slays the marshal when he tried to make an arrest. Clay turns his back on a white-collar job and his girl to pursue the gang. Picking up a bounty hunter and a beautiful half-breed woman along the way, the little band follows the trail into Apache land where the lawman discovers that the outlaws plan to sell repeating rifles to the Indians.