Six months ago, Junko was caught in the act of an affair by her son Hiro, and ever since that day, she has been completely under his control. He forces her to wear revealing lingerie, taking pleasure in her embarrassment. She is tormented with vibrators and electric massagers, then deeply penetrated by his young, firm, and large cock. Though she knows it's wrong, she finds herself awakening to a new kind of pleasure unlike anything she's ever experienced with her husband.