A year has passed since she married her husband, whom she met in junior college, and Kaho, a married woman living in an apartment complex, but her husband has gradually stopped making love to her, which has caused her to grow increasingly frustrated. In an attempt to ease her loneliness and frustration, she frantically pleasures herself. Just as she reaches orgasm, she feels someone looking at her, and when she turns to the window, there is an older man there. Kaho feels a sense of nostalgia for this man, whom she mistakes as a peeping tom. The two, who were never meant to meet, end up in an affair so intense that they end up sweating after witnessing each other masturbating...