After seeing a job advertisement for medical office staff, "Akira Kamikawa" went for an interview, but the place she arrived at was deep in the mountains and looked just like an abandoned hospital. There were only three people there: a doctor, a nurse, and an anesthesiologist. Perhaps due to a shortage of staff, she was hired on the spot. Though somewhat skeptical, Akira accepted. On her way home, she realized she had forgotten something and returned to the hospital to retrieve it. There, she witnessed a banquet being held by three monster cats. Yes—this was the Yamabeya Hospital, run by mountain cats. What on earth will happen from now on?