XII century. Human rights, humane treatment of prisoners, the highest priority of human life... Everything fits in one place - the scabbard hanging on the winner's belt. Kill or be killed. How can someone whose worldview was formed in the second half of the 20th century survive in these conditions? Accept the rules of the game and walk over corpses? Not to accept? And be killed or become a slave? Try to change something? This still requires strength. What if you are not yet fourteen, but life demands from you without discounts, as from an adult, and on one side or the other you are threatened with death? If friends die, whom you could not protect? Until you gain strength, until generosity - the weapon of the strong - is not for you, become cunning, dexterous and merciless, become a Mad Fox.