A young woman is found dead, nude and drugged with tropanyme (a powerful aphrodisiac). Inspector Corentin from the vice squad will go after this new drug and prostitution ring.

The crime squad follows a track that leads to a Morrocan drug and prostitution ring. They end up involved into an international school to form a mercenary army for non democratic governments.

Corentin and Brichot investigate drug trafficking in Fort-de-France, Martinique.