To earn money for his son's surgery, Takeshi's wife, Ena, makes a contract to become the flesh toilet of a wealthy man named Shibata for a year. Even though it's for his son's sake, Takeshi laments his own helplessness for selling his beloved wife. The videos sent from Shibata every week record the entire process of Ena being trained, and even Ena, who initially showed a strong attitude, gradually has her heart taken over by Shibata...