Yayoi, a certified nurse who works for Hoshimigaoka Hospital, has a secret that she cannot tell anyone. She was abandoned by her parents soon after birth and grew up in foster care. Because of that, she does not want to lose the place where she belongs and wishes to stay on here. She is lonely, does not go against anyone, plays the “good person” and devotes herself to work. One day, Todo arrives as the newly-appointed chief nurse. She has convictions about work and cares for patients with a firm attitude. Yayoi tries to reject Todo, but her emotions soon start to be stirred up by Todo’s presence. After that, Yayoi shakes off her past and starts a new life on her own accord.