Even though they both have families, they still want each other's bodies when they have a little time together. Since they are usually sexless, they take this opportunity to repeatedly play hard and seek each other's healing in a sticky, relaxing way. Their big breasts overflowing from their yukatas shake to their heart's content, and they end up with a generous creampie. Today, four adulterous couples are staying at a hot spring inn to spend some secret time that they can't tell anyone about.