Momoko visits her son Hayato's boarding house while he's away for work, relieved to find him living with two seemingly well-mannered young men, Gotou and Tanabe. To pass the time, she decides to cook them dinner. Drawn in by Momoko's elegance and warmth, the two men gradually lose control of their desires. They suggest playing "King's Game," manipulating her with words and seducing her into submission. Soon, they take turns ruthlessly violating her body. Overwhelmed by pleasures long forgotten, Momoko convinces herself it's a one-time mistake—but their lust knows no limits. Faced with the harsh reality that this won't end, she realizes she can no longer stop what's happening.