Miwako, a genuine female masochist, joins a secret BDSM circle to experience her first training session. Having recently graduated from a prestigious private university, she has no prior BDSM experience but harbors a strong desire for captivity and discipline, prompting her to voluntarily apply and gain membership. This training session takes place at a villa owned by a circle member, where she will be thoroughly trained over the course of an entire day and night. As a newcomer, Miwako undergoes various forms of discipline designed to fully awaken and draw out her deepest masochistic desires.