After losing her mother to a certain illness, Aika Yumeno begins working as a surgeon at the same hospital where her mother once worked. While researching, she stumbles upon her mother's medical records. From there, she uncovers the true cause of her mother's death and discovers the dark secret behind the hospital director who had cared for her mother as a nurse. Soon, Aika is drawn into irreversible cervical development human experiments. Gradually losing her sanity, Aika is forced to witness the worst possible reality right before her boyfriend's eyes...