The young heroes from our own world have gained power and maturity from their sufferings and adventures in Fionavar. Now they must bring all the strength and wisdom they possess to the aid of the armies of Light in the ultimate battle against the evil of Rakoth Maugrim and the hordes of the Dark. On a ghost-ship the legendary Warrior, Arthur Pendragon, and Pwyll Twiceborn, Lord of the Summer Tree, sail to confront the Unraveller at last. Meanwhile, Darien, the child within whom Light and Dark vie for supremacy, must walk the darkest road of any child of earth or stars.