Suzu and Kento are a young married couple. They moved to this town about a year ago because of Kento's work. Since moving, Suzu has started working part-time at a coffee shop. The owner is very friendly and caring. Suzu has been suffering from stiff shoulders lately, so he introduces her to a good massage parlor, but Suzu, not knowing anything about it, goes there on the day that her son, who is a naughty boy, is in charge. At first, Suzu enjoys the massage, but when she becomes interested in the boy's big crotch and starts staring at him, he ends up forcing his huge penis into her mouth. Later, the masseuse comes to apologize to the father and son, but Suzu, who has been bothered by the big penis, begins to realize her own frustrations, and the massage parlor's special oil massage releases all of her frustrations...