A mother of two children named Hanan Amamiya leads a busy life taking care of household chores and raising her kids. She doesn't even realize that she and her husband have been experiencing a sex drought until one day when she starts feeling attracted to her son's soccer coach... In gratitude for him fixing her broken stroller, she invites him over to her home where they end up engaged in a sexual relationship. As their passionate encounter unfolds, any guilt about betraying her family disappears, and they spend hours indulging in nonstop erotic activities.

二児の母である花南は、家事に育児に忙しい毎日を送る。気付けば旦那とはセックスレス…そんな時、息子が所属する少年団のコーチに魅力を感じてしまい…。ママチャリを直してもらったお礼にと招き入れた自宅で、コーチと男女の関係になってしまう。気付けば子供たちへの罪悪感も吹き飛び、、8時間もSEXしまくっていた。