For years, the Kingdom of Araluen has prospered, with the evil lord Morgarath safely behind impassable mountains. But while the people of Araluen have felt secure, Morgarath has not been idle. On a special mission for the rangers, Will and his friend Horace, an apprentice warrior, travel to the neighbouring country of Celtica and discover an unsettling truth. Villages, mines and border posts are deserted. The Celts have disappeared. Will senses the hand of Morgarath behind the sinister mystery. Before long, they discover that the king’s army is in danger of being destroyed in a treacherous ambush. Only Will, Horace, and a mysterious girl named Evanlyn, stand between them.