"There are a lot of things you can't understand until you live together." Mahiro (25), a full-time housewife, is already tormented by a storm of regrets in the second year of her marriage. Starting with living with her parents-in-law, the small stress of the household's strict rules and constant nagging has been building up day by day. "Today, I went out with a friend and said I'd be late, but I came out. I want to have an experience where I'm not myself." Her first affair, her first time swallowing, her first time getting a facial... This is a sex documentary about the extraordinary experiences of an inexperienced, innocent wife.