A hardworking couple, Reina and her husband start their own company together, working side by side through thick and thin. Despite facing economic downturns that threatened their survival, they managed to stay afloat... until one day when an important client, Mr. Otaka, filed a complaint against them. Desperate to make amends, Reina apologizes profusely but Mr. Otaka remains furious, taking advantage of her vulnerability by demanding more than just business relations – he wants access to her personally outside of work hours. Fearful of losing both her husband and their company, she reluctantly agrees under false pretenses; unbuttoning her shirt as if submitting herself entirely yet secretly plotting how best protect what truly matters most - her marriage and livelihood.

夫婦で会社を立ち上げ、二人三脚で働くれいな。不景気の波に飲まれそうになりながらも、何とか生き残っていたのだが…。そんな時、得意先の部長・大塚からクレームが発生してしまう。必死で謝罪するれいなに、多大な損害を被った大塚は怒りが収まらず…。彼女の弱みに付け込み「奥さんの誠意次第だ」と仕事以外の関係を迫るのだった。夫や会社を守る為、と自分を偽りれいなはシャツのボタンを外して…。