One day diamond expert Ronnie discovers a real jewel: Ginnie. A victim of Cupid’s arrow, after having met this attractive young woman purely by chance he resolves to follow her all the way to Belgium. Here he is induced by Ginnie’s boss Demarre to take part in a con trick which revolves around fake diamonds. And all of a sudden Ronnie finds himself in a dangerous game of hide and seek involving vicious gangsters, diamond tricksters, hired killers and a kidnapped lady diplomat.