A Beautiful Teacher At The Day-care Center Where My Son Goes To School And I Had A Secret Meeting At Home While My Wife And Child Went Home To Their Parents' House, And We Had An Affair For A Week And Had Sex.

息子の担任保育士のえまはこどもから人気だった。そんなえまと父は妻子が帰省中、不倫関係に陥ってしまう。定期的に自宅で合うようになり、気づけはSEXに明け暮れる日々。嫁と子が帰ってくる前日えまは驚きの行動に出る…。