Observing the first years of the formation of Soviet power, about the life and work of Feliks Dzerzhinsky from 1918-1925; in July 1918, as a result of a revolt of the Left Socialist Revolutionaries, German ambassador Mirbach is killed. Feliks Dzerzhinsky alone goes to the headquarters of the Left Socialist Revolutionaries and Anarchists, he manages to persuade ordinary soldiers and sailors, participants in the rebellion, who are now cracking down on their leaders.