A mother and son who are excited by the thrill of climax and desperate sex just before the father returns home

Chisato, who is in the middle of having sex with her son, learns that her husband is returning home and is anxious to finish it quickly, but the thrill makes her even more excited and her sexual desire goes out of control. A mother and son who are intoxicated by the last-minute pleasure and are inflamed, reach the climax of desperate sex in the midst of approaching danger.