A jeweller is killed in a gang robbery leaving the daughter as the only witness. When the police can't build a case against him she decides to go undercover to infiltrate the home of the killer's brother. Slowly she is drawn into the world of the rival gangs.

British scientist Peter Brady, while working on an invisibility formula, suffers a tragic accident which turns himself invisible. Unfortunately, there is no antidote, so, while working on a method to regain his visibility, he undertakes missions for his government stopping bad guys.

A somewhat prudish young lady inherits a nudist camp. She wants to shut it down, but is persuaded by its members to give the place a look before she takes any action. She agrees, and while touring the camp finds herself attracted to one of the patrons. The trouble is, so does another young woman at the camp. Complications ensue.

Leader of a tribe of amazon women, Queen Kari, has vanquished a rival tribe and rules them with savage ruthlessness and cruel arrogance. A hunter stumbles onto the enclave and falls for one of the slaves, so unleashing the anger and envy of the possessive, sadistic Queen.