Alexander Demin, an employee of the secret department of interworld travel, managed to transmit information from the future to 1941. Using modern combat techniques, the Red Army met the hordes of German troops fully armed. Now the USSR will need the support of descendants, it is necessary to ensure the release of new military equipment. To do this, Alexander is searching for other intertemporal portals and accidentally moves to 1851, to Tsarist Poland. He needs to go back to the future. But how? The only way out is to go to the capital to the emperor and ask for help from the enlightened people of that time.