Livia, the attractive wife of a high-ranking Ministry of the People's Republic official, is accompanied by Ugo, a lawyer, her admirer and her husband's spy, to Venice. There, she is to meet her lover Helmut Schultz, a lieutenant in the infamous SS with whom she is having a passionate love affair. During the journey, Livia retraces the steps of her sexual aberration. But a surprise awaits her in the lagoon city.