In a dreary English industrial town, Arthur McCallum, a young policeman, is assigned to a troubling murder. But this case has dimensions far beyond the macabre as the ancient legacies of the legend of Camelot come to life once more. Befriended by Melchior, apprentice to the great wizard Merlin, the modern Arthur is set a task: to defeat Mordred, King Arthur's demonic son before he unleashes his evil horde on the latter-day world...