The first part of Night and Fog shows remnants of Auschwitz while the narrator Michel Bouquet describes the rise of Nazi ideology. The film continues with comparisons of the life of the Schutzstaffel to the starving prisoners in the camps. Bouquet then addresses the sadism inflicted upon the doomed inmates, including torture, scientific and medical "experiments", executions, and rape. The next section is shown completely in black-and-white, and depicts images of gas chambers and piles of bodies. The final topic of the film depicts the liberation of the country, the discovery of the horror of the camps, and the questioning of who was responsible for them.