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.

This is part one of a two-part biopic about Karl Liebknecht. In 1914, Germany is arming itself for war. Karl Liebknecht, left-wing revolutionary Social Democrat, workers’ leader and a virulent antimilitarist, is one among 110 SPD members of Parliament who vote against approving war loans. From then on, he is considered un-German and a traitor to the fatherland, and his own party’s leadership turns against him. Despite threats, Liebknecht speaks up against the war and writes the manifesto “The Main Enemy Is at Home.” Even when he is arrested and charged with treason, he does not surrender.