A father-in-law who should never be interested in his son's wife, Shoko, falls in love with her. The father-in-law observes Shoko's life and indulges in fantasies, even peeping at his son and Shoko having sex or masturbating. One day, while peeping at Shoko masturbating, the father-in-law is caught by her... 'Dad, I knew you were always watching.' However, instead of getting angry, Shoko seduces him...
