Bag Dadh is besieged by the Magnus army and the fighting is raging. But this war is not Thorgal's. In the heart of the burning city, the Viking has only one goal: to find Aniel and save him from the grip of the Red Magicians who made him the reincarnation of their Grand Master Kahaniel. Will Thorgal manage to regain the trust and affection of this son who has become a cruel and fanatical religious leader?