Three spacemen, three fugitives from Earth, three deserters of degenerating humanity, drowning in bestial prosperity... And a new world, the world of the late Middle Ages in the Western style, the world of the stupid, bloody, but promising youth of civilization. Can she be allowed to repeat the mistakes of earthlings, knowing where they will ultimately lead? And then three mysterious, awe-inspiring figures appear - a prince, a prophet and a devil. They are not gods, but switchmen. They have a titanic task ahead of them - to transfer the development of the young civilization to a different path. But not everything goes smoothly, especially when trust between like-minded people melts...