For Yegor Vozhnikov, who dived into an ice hole and emerged in 1409, everything seems to be going well. Having led a gang of ushkuiniks - river pirates - he not only managed to get a good job in medieval Rus', but also found his beloved woman, Elena, and not just any woman, but a princess! It was she who pushed Yegor to the idea that it was time for him to become a prince himself. And the gang brothers helped him with this. It would seem, live and be happy! However, other appanage rulers do not want to recognize him as an equal, and Grand Duke Vasily directly threatens to hang him for imposture, like an ordinary thief. Egor again has to take up his sword and sit on the rowing bank of the ear. His formidable enemies do not even realize that an alien from the future has found a weak point in their world and now intends to subjugate noble enemies to his will.