Sumire comes to a hot spring inn with her beloved husband, Yuji, with no initial intention of having sex. A wife who works hard raising her children and a husband who also works hard. The trip was meant to show mutual appreciation for each other’s efforts, but Sumire had a plan. That is ‘intimacy within a couple.’ Sumire tries to persuade Yuji to do whatever it takes to restore their relationship, which had become sexless before they realized it. And as soon as they arrive at the inn, Sumire’s ‘temptation’ begins.