"Why don't you try wearing this and seduce your husband once in a while?" Yuko (Maki Tomoda) is given some obscene underwear by a friend as a souvenir from a trip abroad. Yuko stands in front of the mirror, staring blankly at herself in the obscene underwear, savoring the pleasure of being a woman, not a wife, for the first time in a long time. She then buys new underwear, but by chance her husband's friend finds out. Yuko is pushed down without any warning, and even though she feels guilty, her body throbs against her will...