After Rupert Garfield, German translator for England's Military Intelligence Section 6, is nearly executed as a German spy by the Duke of Windsor, he becomes the confidant of an Hungarian astrologist who introduces him the secret agency of British intelligence dedicated to studying the Nazi fascination of the black arts. Upon arrival, Garfield is placed into training for a counter-espionage mission mission that will put him into contact with not only the paranormal underworld of Nazi Occupied Europe, but the efforts of Heinrich Himmler's attempts at becoming a powerful supernatural force destined to conquer Europe.