Jim Lewis's Paris vacation takes a dangerous turn when he's mistaken for a jewel smuggler and handed priceless gems. After being attacked by thieves and learning of a soviet plot to steal the Sergius jewels, Lewis must navigate a web of espionage, double-crosses, and murder. With the help of pilot Ned Orley and mysterious Jenny Gardner, he races to uncover who truly owns the legendary stones before they fall into the wrong hands.