Except for her red hair, Yoko Nakajima is a typical, obedient Japanese high school student. Her life is fairly ordinary--that is, until Keiki, a unicorn in the guise of a young blond-haired boy, tells her that she is his master and must return to their kingdom. When the boy mysteriously vanishes. Yoko is left alone, confused, and wandering through a foreign land with nothing to help protect her save a magic sword and a magic stone. When Keiki suddenly appears at Yoko's school, little does she realize that her life is about to change. Lost in a strange land-without a map and demons on her trail-Yoko begins her quest for both survival and self-discovery.