In Lappland, Val and Arn become involved in a struggle for succession between twin brothers. Arn consults a mystical hermit about whether his destiny is intertwined with Maeve, the daughter of an archenemy. With the sinister Mordred in control of Camelot, Val and Aleta seek to raise an army, a goal that requires Val to capture a notorious outlaw, battle a troll, and find a hidden treasure. Arthur's forces come together at High Cross and an epic battle is waged for the fate of Camelot, during which Arn is made a knight of the round table.