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.

Soviet Scientist Petrovich pioneers the way to the Sun, but his spacecraft is never heard from again. Later, Andrew's laboratory investigates means of protection from deadly radiation. Andrew repeats Petrovich's journey, and offers his life to rescue an orbiting science laboratory, which holds the solution to the problem.