The cold streets of Warsaw, the Ghetto where thousands of Jews lived during the Second World War and the deportation square where the train left for the Nazi concentration camps are living witnesses of one of the darkest times of humanity. This film travels to the chilling corners of the Auschwitz, Bkernau and Majdanek concentration camps where nearly 2 million Jews were murdered. Along with never-before-seen images, the renowned Argentine writer Marcelo Birmajer seeks to understand part of what happened in that dark chapter in the history of humanity and in turn decipher not only how humans could commit such an atrocity, but what they must do to prevent it from happening. happen again.