Spanish photographer Francesc Boix, imprisoned in the Mauthausen-Gusen concentration camp, works in the SS Photographic Service. Between 1943 and 1945, he hides, with the help of other prisoners, thousands of negatives, with the purpose of showing the freed world the atrocities committed by the Nazis, exhaustively documented. He will be a key witness during the Nuremberg Trials.
Aragon, Spain. After living through her parents' divorce, Mar arrives in the summer in a mysterious town where she is fascinated by the horrifying stories about the Civil War and its terrible consequences told by members of a group of teenagers who seem to live according to rules that are strange to her.
