Mio works in public relations for a well-known company. With her stunning beauty, she's been doted on since her school days, winning beauty pageants, and eventually married a husband who works for a top company. Despite her impressive background, there's something a little dark about her... In fact, she's a hardcore masochist!! Her husband is a sadist, and they spend their days at home indulging in kinky sex... And not content with just her husband, she also sleeps with men she meets online...