In May of 1983, a man turns 49 and, with his 17-year old son, journeys to the village in Baden that he left 40 years before. He wants to discover what happened then, the truth about an affair his mother had with a young Polish prisoner of war, how the authorities came to learn of it, the lovers' arrest, and the aftermath. While his son takes Polaroid photographs, he retraces the steps of his childhood and interviews those who should remember. The story is disclosed in flashbacks that focus on the lovers (Paulina and Stanislaus), on a jealous and conniving neighbor, and on Mayer, the local SS commander who wants to find a way out of inevitable consequences.

Kurt Gerstein—a member of the Institute for Hygiene of the Waffen-SS—is appalled to discover that a poison gas he helped discover is being used to kill Jews. Driven by his conscience to alert the rest of the world, Gerstein teams up with a young Jesuit priest, Riccardo Fontana, but their protestations fall on deaf ears in the Vatican.

The historical background to the story is the transfer of 269 executed women to the Berlin Anatomy Department in the years 1939-1945. The corpses were misused for experimental purposes.

Lydia Kowalenko is fired from the pharmaceutical company where she has worked for many years because she refused to help cover up the use of a dangerous chemical. Her daughter Katja, however, has no scruples and risks an operation which is more beneficial to her own medical research than to the convalescence of a young patient. Then Katja's only son dies after a car accident. Was he too the victim of a career-minded doctor?