Don't have any knowledge of history? Do you know anything about physics, chemistry and mechanics? Do you only know how to hold a blade firmly in your hand? Welcome to fifteenth-century France! The coach of the country's fencing team, hit by a truck, is reborn in the body of the bastard Jean d'Armagnac, Viscount de Lavardant and Roquebrun, the illegitimate son of Count Jean V d'Armagnac, one of the last feudal rulers by God's grace, and not by mercy King of France. The father is killed, the mother is in the monastery, the ancestral lands are seized by the king of France, a hunt is declared for the bastard. What should the main character do in the Middle Ages, without sufficient natural scientific and historical knowledge for progress? The bastard decides to plunge headlong into the era and gain glory for himself in the only possible way: with a steady hand and a blade.