Kayo, a wife burdened by the debt left behind by her husband, struggles to repay it while working at a night bar. One day, she meets Haruka, a busty bisexual soapland worker who becomes aroused by Kayo's body. When the bar is empty, Haruka seduces her, introduces her to the world of erotic massage, and indulges in what's called "training!" — but is really lesbian soapland sex. In exchange for covering the debt, Haruka asks Kayo to become her lesbian pet...