In a dark age of witchcraft and demons running amok, the sickly King of Valiante trusts his vizier Mendoza to rid the land of misery and disease by hunting down witches and warlocks. When a witch gives birth while burning on the stake, a mysterious armour-clad fiend saves the baby and gallops off into the dark. Seventeen years later, Germán Luis reveals the truth behind the inquisition to a particularly interested prostitute, while his son León is chased by the king’s guard.