A married woman named Saki has been waiting alone today for her husband to come home. She made dinner but didn't even taste it because she went out drinking with coworkers. It's been ten years since their marriage, and they haven't had sex lately; recently, she suspects him of cheating due to his suspicious behavior. In her thirties now, Saki feels stressed by her daily life filled with unfulfilled desires and envy towards other women. To change this, she decides to work at a local izakaya bar. There, she meets Hajime, a young and attractive man who captivates her. As they spend more time together, Saki becomes immersed in the forbidden pleasure of an affair with a younger man.

専業主婦の咲は今日もひとり寂しく夫の帰りを待っている。せっかく夕食を作っても同僚と飲んで来たからと一口も食べてくれない。結婚して10年、夫とはセックスレス、最近は普段の怪しい行動から夫の浮気を疑っている。30歳を超えてから咲は女ざかりで欲求不満な日常にストレスさえも感じていた。そんな生活を変えようと咲は駅前の居酒屋でバイトをすることにする。そこで若くて好青年なはじめに出会い惹かれていく。「オンナの悦びを思い出させて…」年下の男との不倫セックスに溺れていく人妻。