Futaba, a renowned beauty in the neighborhood, is a talented and elegant housewife who works as a piano teacher from home. She has an independent son who's married and an eldest daughter in college, showing her warm, family-oriented side. As sensual as she appears, she hasn't had sex with her husband in over 20 years. Curiosity grows about how this seemingly virtuous wife would indulge in sex and what kind of moans she would make. Her long-suppressed desires finally ignite, proving too strong for even her disciplined nature to control.