Our people find themselves in medieval France. Beginning of the fifteenth century. The Hundred Years' War is in full swing there. They need to somehow survive and not get lost in the bloody whirlwind. What can people who fought in modern wars do with the world of the Middle Ages? They are not ordinary people, students or armchair strategists. These young guys have already had a taste of gunpowder in numerous military conflicts of the twenty-first century. They are professionals. What should they do if they find themselves in the thick of the Hundred Years' War, where an unprepared person will simply die?