In a French seaside town, at a boarding house for civil servants recovering from surgery and maladies, the six male residents' lives change dramatically when two women arrive: Catherine, lively, sexually liberated, willing to kiss, dance, and sleep with the men, and Leonie, reserved, formal, conservative.
A frustrated Frankfurt innkeeper is recruited as an agent for the "Gehlen Organization" and after a short training period, during which he is familiarized with sophisticated espionage methods, he takes his first steps as a spy.
After a peaceful sailboat ride, four young people, including rich kid Bill, Joe, Fred and Jane, knock on the door of a secluded villa after their dune buggy runs out of gas.