The commandant of Auschwitz, Rudolf Höss, and his wife Hedwig, strive to build a dream life for their family in a house and garden next to the camp.
Johannes, a doctor of physics, travels with his doctoral supervisor to a scientific congress in the Alps. A series of mysterious incidents occur on site. He meets Karin, a mysterious jazz pianist who seems to know more about him than she can know. Suddenly, mysterious deaths begin to pile up and Johannes tries to uncover the secret under the mountain.