Ayu Tateishi, a popular second-year student at her middle school, was never interested in fantasies or miracles. She was satisfied to maintain her appearance of being cool, calm, and collected in order to gain the attention of her crush, Tetsushi Kaji. Ayu's carefree childhood is shattered when Nina Sakura, a new transfer student who turns out to be a witch, appears. As the only person who is aware of Nina's power to perform spells using a mini-computer, Ayu is compelled to assist Nina in her quest to locate the five Holy Stones, which would allow her to marry the prince of the Magic Kingdom.