It is the year 1935. In Germany the Nazi Party has already come to power, but in the USSR no one yet expects war. In a provincial town, a juvenile thief, Olga Streltsova, comes to after being struck on the head and discovers that now her consciousness has merged with the consciousness of another person.
A person from the future—a radio engineer scientist fascinated by military history, tactics, and weapons. She knows for sure that the anti-aircraft guns of the RKKA cannot cause serious damage to the Junkers, and that the tank troops are not supplied with spare parts. To achieve her goal, Olga is ready to go over corpses.
Can the new Jeanne d’Arc change the course of history and save at least 15 million people among those who died in the great war? She has only six years to try to do it.