鬼才・川崎軍二監督によるヒューマンエロス。東京近郊の湖で遊覧船屋を営んでいる一家。そこの女主人は性欲に溢れ、夫とのSEXが終わった直後に、それを覗き見ていた義父に対しても股を開くのだった…。A humanistic erotic film directed by the genius Gunji Kawasaki. A family runs a cruise boat shop on a lake near Tokyo. The proprietress is overflowing with sexual desire, and immediately after sex with her husband, she opens her legs for her father-in-law, who is peeping at her…