A mysterious magnetic spool found during a construction project is discovered to have originated from Venus. A rocket expedition to Venus is launched to discover the origin of the spool and the race that created it.

Mikhail Nikolaevich Ermakov has come a long and difficult life path. At the age of nineteen, the student, the son of a worker, was sent on a Komsomol ticket to work in the Cheka. In one of the operations he was seriously wounded. And now, many years later, General Ermakov comes to Moscow and settles in the house where he spent his youth...

A story about an oil worker who went from the head of a geological exploration expedition to the chief geologist of the trust.

In this the fourth episode, “Battle of Berlin,” the Soviets start their assault on Berlin, and Stalin negotiates with the other Allies.

In Berlin, Lieutenant Yartsev's infantry and Tzvetaev's battery fight their way in the U-Bahn. Captain Neustroev's company is selected to hoist the Victory Banner atop the Reichstag.