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.

A fiery Cuban woman guides an emissary from the U.S. president through the jungles of war-torn Cuba.

A woman leads an expedition into a remote jungle to find her long-lost brother, but instead finds a mad scientist who has created a fungus monster that feeds on the local inhabitants.

A pastry-shop girl (Penny Edwards) sees a priest's (Ross Elliott) and a lawyer's (Rick Vallin) brother take part in a jewel heist.

United States Federal agent Rigby travels to the Central American island Carlotta to investigate a stolen aircraft engines smuggling racket.

The entertainment duo Mitchell & Petrillo, en route to a USO show for troops in Guam, fall out of their plane and end up on the jungle island of Cola Cola, where the mad scientist Dr. Zabor is conducting evolutionary experiments.