A socialist story of "atoms for peace" and compulsory labor in an East German uranium mine under Soviet control.

Re-enacted true story of successful assault by Nazis, posing as Poles, on a German border radio station so that Hitler could "justify" thereby his invasion of Poland.

This film continues the story of radio operator Ludwig Bartuschek from “The Sailor’s Song”. Near the end of the Weimar Republic, Bartuschek (Erwin Geschonneck) is working as a mechanic in the Sperber airplane plant. Director Dehringer offers him the opportunity to train as an airplane constructor if he is willing to give up his communist beliefs under oath. Bartuschek will not allow himself to be bought and instead joins the underground resistance movement.