Young Pip must embrace his power to become a battle mage so he can defend the Magic Realm against the fierce Northmen invading from the sea and from the dark forces attacking his kingdom. While recovering from Mordred's reign of terror and the departure of King Arthur, Pip foresees a new enemy breaching the shores of Britain: a fleet of Northmen led by the ruthless Halfdan Ragnarsson. Pip and Merlin fear Ragnarsson...