Dr. John Meredith has been driven from civilization by the criminal activities of his twin brother Bradley Meredith. With his infant daughter, he settles in the African jungle, where his ability to cure the native ills has resulted in his virtual control of the Masamba tribes, who possess vast diamond mines coveted by a gang of crooks.

Doctor Gatling invented a war machine to beat all arrows, and guns.

Jabberjaw (a 15-foot air-breathing great white shark) and The Neptunes (a rock group made up of four teenagers — Biff, Shelly, Bubbles and Clamhead) travel to various underwater cities where they encounter and deal with assorted megalomaniacs and supervillains who want to conquer the undersea world.

A delinquent girl involves an innocent friend in an armed robbery followed by a jail-break and hostage-taking with her equally delinquent boyfriend.

An artist working in a remote army post is juggling the storekeeper's daughter, his fiancée newly arrived from the east, and the Indian Chief's daughter. But when a vengeful settler manages to get the army and the braves at each other's throats his troubles really begin.

An American businessman returns from a hunting trip to find fascists have overrun the country in this propaganda film.