What drives a 34-year-old ordinary housewife, Yui (pseudonym), to expose her naked body to men other than her husband? Over a two-day, one-night period, this story delves deep into the hidden emotions of a married woman. Working part-time at a restaurant, she began her first relationship at 19 and had a shotgun wedding at 22. However, she divorced due to domestic violence from her ex-husband, and later met her current husband, who works at a bookstore. Introduced by a friend, she was drawn to how different he was from her previous partner, remarrying at 28. Though their relationship is good now, both are busy, leaving little time for each other. Troubled by the lack of sex in their marriage, she decides to join an adult video shoot to uncover her husband's hidden sexual desires. As she writhes passionately under another man's cock, her actions bring new tensions into their married life.