Oleg Kononov, a man from our world, accidentally met with a “misfit” from an Earth other than ours, and with his help was thrown into the place of this very “misfit.” However, without receiving any precise instructions, except for a short phrase addressed to a certain Lucius Ferro. Oleg, thanks to various accidents, becomes a knight of the Order of the Sword and now his name is “brother Heleg”. The world he finds himself in is very reminiscent of the mid-fifteenth century here, with some differences: both in technology and political structure or “geographical discoveries.” Heleg the Swordbearer is trying to survive in new conditions, at the same time not losing hope of finding the said Lucius Ferro and perhaps with its help, find yourself again in your “native” world and time.