Hikaru is unhappy with her sex life with her husband and decides to cheat on him with a man she met on a secret dating app. Interested in SM, she readily accepts the man's rope fetish. Despite her hesitations, she became addicted to the pleasure she experienced for the first time. Since then, she has been meeting this man in secret, cheating on her husband, being tied up, tortured, violated, and enjoying the thrill of pleasure. One day, her husband was out all night, drunk...