At the request of a powerful figure, the shy and pure schoolgirl Misaki Otohime is placed under the care of Hayami. Despite her innocent heart, she begins learning the secrets of BDSM from him. Under his guidance, she is trained in the ultimate techniques of Ryuu Baku (Dragon Bondage), using tools such as whips, candles, and enemas. The story depicts her transformation as she awakens as a mistress and evolves into a new being.