French detective Tierno Mesurado travels to Miami at the behest of the wealthy husband of the woman he loves, Iris Arco, a Cuban-born former model, who has been receiving threats that may be connected with her modeling days.

What do the Silk Road, sewers of Istanbul, Marco Polo, Mongolia and the Holy Land have in common? That is what the protagonists, Ottavia Salina and Farag Boswell, will have to find out while again putting their lives in danger to solve a mystery that starts in the first century of our era.