Lena's father works as a developer in Hitler's high-tech forge, where the famous unit receiver E1 was developed. When he dies in 1945, he leaves a notebook with the name Sattler. He should look for Lena. Lena is stranded with her seriously ill mother Hilde and her sister Betty in a village near Fürth. Here she meets two men: Walter Juskowiak, returnees from prisoner of war, with whom she meets, and Hans Sattler. The representative for radio kits turns out to be the son of Wilhelm Sattler, owner of the Sattler works in Fürth. Lena is sure to have finally found the right man.
In January 1945, the young nurse Anna Mauth, working at a hospital in Dresden, becomes engaged to senior physician Benjamin Wenninger. At the same time, an English Lancaster bomber is shot down. The pilot Robert Newman, the only survivor, manages to reach the city severely injured and hides in the hospital's cellar. Anna discovers him incidentally thinking he is a German deserter, but finally decides to help Robert...
Thomas Becker (Matthias Koeberlin), son of a powerful building contractor (Heiner Lauterbach), is shot on New Year's Day. Commissioner Barbara Falck (Sabine Winterfeldt) and colleague Christian Krämer (Wolf Danny Homann) start the investigation and suspect a connection with the collapse of the "cube", in which a young cleaner was killed. Was the murder of Thomas an act of revenge against the Becker and Sons company?