Serena, a moon goddess with the power to read minds, is possessed by the spirit of a woman who, in the thirteenth century, betrayed the evil Atrox and has now entangled Serena and herself in a plot to overthrow him. Not having been herself lately, Serena has sudden lapses of memory and is acting like a completely different person--one she doesn't like very much. To add to her confusion, she knows that someone has been following her since that night an elderly woman helped her. Now Serena wonders who was that woman--and what has she done to Serena?