To save his son suffering from a rare disease, Hitoshi's wife Hibiki enters into a contract to become a sex slave for the wealthy Hosokawa for one year. Although it is for his son, Hitoshi laments his own helplessness for selling his beloved wife. Every week, videos sent by Hosokawa record the entire process of Hibiki being trained, and although she initially maintains a strong attitude, Hibiki gradually becomes Hosokawa's in heart as well…
