Drought, plague, and war have left the Isle of the Mighty battered and its heart, the beloved Arthur, grievously injured-until a secret relic is brought before the dying King; a Holy Grail that heals his wounds and restores his vigor. Now, in this time of rampant disease and death, the great king wants to share the Grail's curative powers with all who require it. A shrine will be built to house the holy treasure-and Arthur's fabled Kingdom of Summer will at long last come to be. But evil has entered the royal court in the guise of a beautiful maiden; a soulless, malevolent force capable of seducing the King's loyal champion, confounding the sage, Merlin, and carrying both the sacred Grail - and Arthur's adored Queen - off into the dark unknown. Now Arthur face the greatest challenge of his sovreignty.