Thomas Lindmer (John Mills), a world-weary sorcerer, foresees the return to Earth of his ancient adversary Morgan LeFey (Jessica Walter), who has been granted dominance over men's souls by The Nameless One (David Hooks). In order to combat her evil magic, Lindmer must pass the Guardianship of the Light onto a young psychiatry-resident, Dr. Stephen Strange (Peter Hooten),who has no inkling of his destiny.
