Hikari, who is not satisfied with her sex life with her husband, decides to cheat on him with a man she met on a dating app she secretly started. She, who was interested in sm, readily agrees to the man's rope hobby and, despite her confusion, becomes addicted to the pleasure she experiences for the first time. Since then, she has been spending her days lying to her husband, meeting the man in secret, being tied up, tortured, and violated, and enjoying stimulating pleasure. One day, her drunken husband brings a colleague home after drinking…