Miho's husband, Keiichi, was in a traffic accident three months ago and has been suffering from erectile dysfunction. Miho feels dissatisfied with her married life with Keiichi. One morning, as Keiichi is heading to work, Keiichi's younger brother, Shinji, comes to visit. Three months ago, Miho was raped by Shinji, and before she knew it, she had begun to give in to him...