Long ago, Zorak-Krulith Plains were the hunting grounds of a fierce and powerful beast known as the Shadowstalker. Its reign was tamed by the ancient mages who bound the monster in a eternal slumber beneath the plains, but their pact has begun to falter. As the Shadowstalker stirs once more, Traitor Thorn - a high-ranking defector from the Dark Order - finds herself caught between the hunters and the hunted, seeking safe passage through the treacherous plains. Exile Xander is her only hope for survival.