Marc is a French secret agent whose only weapons are judo and karate. With the help of his sidekick Jacques, the duo goes to protect a noted scientist from falling into the hands of a gang of underworld thugs. Marc finds love with one of the female gang members who turns out to be a double agent with the British Secret Service.

Suzuki, a Japanese secret agent, is sent to Versailles to unmask a certain Klauss, who is to receive stolen documents from Saudi Arabia.