A man who will live with his sister Yukino because of a strange thing, a man who can not stand up to that color incense seeks Yukino while taking a bath. A man who makes the body fit in a narrow bathroom with a shy and undecided sister-in-law, a man who takes on the taste of Yukino, steals his wife's eyes and goes further Yukino. Eventually Yukino himself wakes up to pleasure and seeks a man ....

ひょんなことから妻の妹雪乃と一緒に暮らすことになる男、その色香に耐え切れなくなった男は入浴中の雪乃を求める。弱気で断れない義妹に狭い浴室でカラダを密着させ迫る男、言いなりの雪乃に味を占めた男は妻の目を盗んでさらに雪乃をまさぐる。やがて雪乃自身も快楽に目覚めてしまい男を求めてしまう…。