The film’s protagonist is Jens-Jürgen Ventzki, who was born on March 13, 1944, in Łódź, a city then bearing the name Litzmannstadt. His father, Werner Ventzki, an NSDAP member and ardent Nazi, served as mayor of Łódź from May 1941 to August 1943. The film tells the family’s story, the father-son relationship, and documents conversations between a perpetrator’s child and…