Goro's father-in-law is a skilled masseuse who is well-known in the neighborhood. His wife Miki has just given birth and her sensitivity has increased abnormally. And her husband Daisuke is working away from home. One day, Miki is exhausted from housework and childcare, so Goro gives her an oil massage to show his appreciation. He had no ulterior motives. He just wanted to relieve his fatigue. However, every time he touches Miki's skin, which is an erogenous zone all over her body and twitches with excitement from the massage, Goro's reason begins to go haywire...