In order to save the life of her son, who has an incurable disease, Shingo's wife, Riho, signs a contract to become a wealthy man named Yoshimoto's urinal for one year. - Shingo laments his helplessness in selling his beloved wife, even though it was for the sake of his son. - The videos sent by Yoshimoto every week record the entire process of Riho being trained, and Riho, who was initially showing a strong attitude, gradually becomes Yoshimoto's property even to the core...