Der DEFA-Spielfilm von Günter Reisch schildert den Kampf Karl Liebknechts von seiner Entlassung aus dem Gefängnis am 23. Oktober 1918 bis zu seiner Ermordung am 15. Januar 1919. Ebert will die Abdankung des Kaisers, um die Revolution zu verhindern, Liebknecht führt die Arbeiterklasse zur Revolution.

October 1918: Karl Liebknecht is released from prison and Berlin workers celebrate his release. Although WWI is almost over, the German Kaiserreich in vain sends its last reserves to the slaughter. The working class is in a rebellious mood; the uprising of Kiel’s sailors against war and militarism sets off a call for revolution led by Liebknecht. On November 9, Liebknecht declares the Free Socialist Republic of Germany. But pro-Kaiser military and right wing Social Democrats oppose him.