New nurse Hikaru enjoys intense sex with her pharmacist boyfriend after her first day on the job. The next day, she is attacked by a hospitalized patient and locked inside a secret confinement room in the hospital. She soon discovers she's been trapped as part of a hospital-wide conspiracy to train sex-servant nurses for VIP patients. Held captive, Hikaru is gradually subjected to BDSM training, turning her into a sex slave. Though terrified by these new experiences, she finds herself increasingly ensnared. The fate of the rookie nurse, caught in the hospital's dark conspiracy, begins here.