Seeking a fresh start, Mayu Mizuno begins her career as a nurse at Aoshima General Hospital, only to discover that her ex-boyfriend, Nimura, is a resident doctor there. Amidst the tension of their past, Mayu is drawn into the hospital's illicit culture by the provocative nurse Satsuki, leading to compromising encounters that shatter her hopes for a peaceful new beginning.
Mayu continues her work at Aoshima General Hospital while plagued by recurring dreams of her former flame, Dr. Nimura. After a series of confusing encounters and a brief fling with Ryoko, Nimura finally gathers his courage to confess his true feelings to Mayu. The two reconcile and rediscover their passion for one another, committing to a future together just as their colleague Satsuki abruptly resigns from the hospital.