Shiori is a married woman living peacefully with her husband Kenichi. Although she has a happy married life, her husband and she have recently been having less sex, and she has been feeling unfulfilled. One day, while out with Kenichi, she happens to meet Kenichi's junior colleague, Yamaguchi Takao. Later, when the three of them are eating hotpot together, she learns that Yamaguchi is working as a dispatched masseuse. "If you don't mind, I'll give it a try." The massage started out as a light one, but every time Yamaguchi's big, warm hands touched her skin, her body gradually became hot. From that night, Shiori couldn't get Yamaguchi's fingers out of her head. Before she knew it, she called Yamaguchi without her husband's knowledge and secretly requested him to come to her for a massage... "It's supposed to be a massage, so why...?" During the treatment, every time Yamaguchi's skillful fingers traced her sensitive parts, Shiori's body reacted on its own. And before she knew it, her dependence on massages turned into a craving for Yamaguchi.