Eiichi, the father-in-law, who is living a comfortable and comfortable life overseas, suddenly returns to Japan and has to stay with his son and his wife for a while. Yuna, a beautiful wife who has always had a rough relationship with women, doesn't think well of Eiichi, who is pushy and lacks consideration. ``When my husband goes to work, I'll be left alone with my father-in-law.'' The next day, Eiichi teaches Yuna how to play golf step by step, without even being asked. Eiichi's hand, which had a lewd black glow, reached out to Yuna's private parts...