Three years into marriage, he still loves Mahiro deeply, but his body no longer responds, and their sex life has been failing for over a year. Then his boss Goda turns their marriage upside down. It begins with a promised promotion: Goda offers to recommend him in exchange for being entertained at their home, but his true target is Mahiro. Under orders from the boss, the couple is forced to agree to visit a porn theater with him. Unable to refuse, the three head there days later, where the faithful wife is drawn into a degrading wife-sharing ordeal.