Scahta is queen of the Sidhe, the ancient, secretive people of Ireland's forests. But they are being destroyed by the Tall Invaders, whose iron weapons crush the bronze swords of the Sidhe. Believing a king can help her save her people, Scahta looks to the kind and handsome Anluan. But he carries the blood of both Sidhe and Invader, and there is a great rift in Scahta's tribe when she marries Anluan and names him king.