For him, saving people was impossible. It was essential to bear witness. Why? With this word, all questions have begun since Wilhelm Brasse's arrival in Auschwitz. Why this incomprehensible suffering? Why does no one intervene? As prisoner No. 3444, he is assigned to the identification service, where he is to photograph the other concentration camp inmates. People whose faces are marked by the terror of death. People who will soon disappear in the gas chambers. When Brasse is ordered to burn all the photos in 1945, he resists in order to bear witness to the unimaginable crimes against humanity.