容姿端麗で仕事も完璧にこなす菫は、男性社員から羨望を集めるマドンナ的存在。しかし裏では、「いい歳なのだから早く結婚しなさい」と急かす両親の存在に頭を悩ませていた。まだまだ独身生活を謳歌したいものの、親を心配させたくない気持ちもある。そこで後輩の男子社員に偽の彼氏役を依頼。実家に挨拶に行き、親の疑惑の目を欺くため二人で仲睦まじい恋人を演じ続ける二人。しかし、拒むことを許されない状況下で過剰な触れ合いを繰り返すうち、嘘だったはずの甘い空気に二人の理性が狂い始めて…。

Sumire, with her stunning looks and impeccable work ethic, is a Madonna figure envied by her male colleagues. However, behind the scenes, she's troubled by her parents' urging to get married soon, saying, "You're old enough, you should get married already." While she still wants to enjoy her single life, she doesn't want to worry her parents. So, she asks a younger male colleague to pretend to be her boyfriend. They go to her parents' house to introduce themselves and continue to act like a loving couple to deceive their suspicious eyes. However, as they repeatedly engage in excessive physical contact in a situation where they cannot refuse, the sweet atmosphere that was supposed to be a lie begins to cause their reason to waver…