Yuka married her current husband two years ago. Her husband has been on business trips lately and is often not at her home. As a result, she spent more time with her husband's stepchild, Atsushi, and got along well with her stepson. One day, Yuka finds a video camera in Atsushi's room that he bought with his part-time job. When she looks at the video that was taken carelessly, Yuka's figure is reflected there...
