The doorbell suddenly rang. When Yuka (Yoshi Tsuchimura) went to answer it, a strange woman was standing there. The lady claimed that she had to pay her husband back for the taxi fare, but Yuka's husband, Shinji (Arita Horii), said that he borrowed the money at the bar. Yuka became suspicious of the inconsistent statements of the two people, and that night she secretly looked at her husband's mobile phone. In the phone, she found chat records of her husband having extramarital affairs with five women. Shocked, Yuka and Kaito (Rotoshi Furuya) worked together to find and eliminate the object of her husband's extramarital affair. In the process, the distance between Yuka and Kaito gradually narrowed, and eventually a physical relationship occurred...