主角是結婚第二年、32歲的主婦中山文。文原本打算和周圍人都羡慕的帥氣誠實的丈夫過著幸福的新婚生活，有一天，看到了一位陌生女性發來丈夫手機的訊息。然後丈夫開始晚回家，是要質疑丈夫，承擔婚姻關係破裂的風險，還是放在心裡，開始了迷茫的婚姻生活，不安的文開始尋找外遇的證據……。

这个故事是根据夏川幸乃的小说和黑泽明步的喜剧改编的《尼文之一夫妇》改编的。 故事讲述了32岁的家庭主妇中山芙美结婚两年后，有一天，她在心爱的丈夫的智能手机上看到一条意味深长的信息，开始怀疑他有外遇。

Aya Nakayama (Manami Higa) is a 32-year-old housewife and she has been happily married for 2 years. To other people, Aya Nakayama and her husband look like the perfect married couple.

One day, Aya Nakayama sees a message from a strange woman on her husband’s cellphone. She wonders if her husband is having an affair. She also remembers that she and her husband have not been intimate in the last two months. Aya Nakayama begins to find other evidence of her husband having an affair.

本作は夏川ゆきのが原作小説、黒沢明世がコミカライズを手がけた「にぶんのいち夫婦」を原作とする物語。結婚2年目の32歳主婦・中山文が、ある日最愛の夫のスマートフォンに届いた意味深なメッセージを見て浮気を疑うようになり、彼を浮気相手とおぼしき人物から取り戻そうと証拠探しに動き、夫婦の絆のために戦うさまが描かれる。

행복한 신혼 생활을 보내고 있는 결혼 2년 차 주부가 어느 날 남편 핸드폰에서 낯선 여성의 의미심장한 메시지를 보면서 벌어지는 이야기