Today is the Etsuko (Arakawa Miki) of the bridal night and Fuufu of Toshihiko (Kazumasa Takami). The subsequent Etsuko yearns for the days with older brother, Kentaro (Mutsuo Yoshioka). Two brothers live five years ago. Saved a marriage fund of the Etsuko while Kentaro working in a factory, and earning cost of living. Be Kentaro of such Younger Sister thought, but be worried about the Etsuko which comes to seem to be a woman recently, and be the beginning….