白川さん（井桁弘恵）の先輩町田杏花（野呂佳代）は、最近心の中で、小さな白川さんを育ててる。そんな町田さんを見習って梅本カンナ（秋元才加）もポジティブマインドになろうと決意。しかしある日、独身の梅本さんは既婚の社員にマウントを取られたと感じ…卑屈な心と戦っていた。そんな中、産休に入る女性社員の幸せそうな姿に、またもや僻んでしまい…。
一体、梅本さんは白川さんマインドになることができるのか？白川さんが考える「幸せ」とは？
Mr./Ms.'s (Hiroe Igiri) senior, Anka Machida (Kayo Noro), has recently been raising little Mr./Ms. Shirakawa in her heart. Following the example of Mr./Ms. Machida, Kanna Umemoto (Saika Akimoto) also decided to become a positive mindset. However, one day, Mr./Ms. Umemoto, who is single, feels that he has been mounted by a married employee ... I was fighting with a servile heart. Meanwhile, I was once again stunned by the happy appearance of a female employee who was going on maternity leave. Can Mr./Ms. Umemoto become Shirakawa Mr./Ms. mind? What does Mr./Ms. Shirakawa think of as "happiness"?
