The sexually unsatisfied bodies of beautiful mature women in their 40s and 50s are flushed and throbbing with heat!! A lustful mature woman craves an erect cock, and her lightly darkened nipples that tempt men stimulate her with their outstanding sensitivity!! Ryoko, who indulges in masturbation every day, has a shameful sex. Sayo, who has fallen into a rotten physical relationship with her daughter's husband. Rika, a serious and strict office lady, has sex to make a baby as soon as she gets home!! Mio, who has immoral sex with her daughter's husband!!