In the wake of King Uthers sudden death, chaos threatens to engulf Britain. When the sorcerer Merlin has visions of a dark future, he installs the young and impetuous Arthur, Uthers unknown son and heir, who has been raised from birth as a commoner. But Arthurs cold and ambitious half-sister Morgan will fight him to the bitter end, summoning unnatural forces to claim the crown in this epic battle for control.