Yusaku finds his mother-in-law Momo’s body unbearably sexy. Ever since the two generations began living together, he has been one step away from crossing the line. A chance glimpse of Momo in shapewear, digging into her bursting huge breasts and voluptuous body, only makes his desire worse. He resolves to bury his dirty thoughts and start fresh, but that resolve quickly crumbles when he finds Momo drunk and defenseless.