Set in 1955, French secret agent Hubert Bonisseur de La Bath/OSS 117 is sent to Cairo to investigate the disappearance of his best friend and fellow spy Jack Jefferson, only to stumble into a web of international intrigue.

A beautiful woman, Sandra, seduces a wealthy businessman, Miles Rennburg. Little does he realise that she has been sent to kill him at the behest of her boyfriend/crime partner, Lester. Controlling all this is Sue, Lester's wife.