Thirty-year-old housewife Haruka Nanasegawa wants to make her own choices instead of living under her husband's control. Her husband, twelve years older, treats her like a child and keeps her on a tight leash. During their trip, she lies to the jealous man for the first time and slips out of the hotel in the early morning and late at night to have her first affair. The intense cunnilingus she has always craved leaves her cumming wildly with a blissed-out face. With guilt making the thrill even hotter, she betrays her husband again and again across three sex scenes.