On the island of Fuerteventura, the Germans have built a house of 'rest' that offers all kinds of pleasure to their submarine officers after hard months in the deep sea. The British secret service to infiltrate Erika Simon, German Jewish exile in England, in the group of prostitutes who enliven the leisure hours of the Germans. Its mission is to gather as much information as possible about the movement of the dreaded submarines. Your risk, involve your heart in an unexpected relationship. His dilemma, trapped in a terrifying crossroads: betray your allies or betray her lover ...