Rodka Gulyaev is a pupil of the Gumniskii rural secondary school. One day on the bank of the river he digs out the darkened old icon. Unfortunately for him his grandmother Avdotya, an overbearing and cunning old woman, spreads a rumor that the icon is miraculous, and her grandson is a saint.

A first part of story about a Soviet spies trying to infiltrate German Intelligence center "Saturn" during and after the WWII.

It is May 1912. Thirteen political prisoners are being tried in a naval fortress of Kronstadt. They are sentenced to death by hanging. A clandestine Bolshevik organization decides to free the prisoners during their transfer to the place of execution. Vasily Panin, a junker of a school of naval engineers, is one of those entrusted with this dangerous task.

KGB agents are organizing the disinformation campaign for a western spy.