After spraining her ankle during gym class, Noa Miura is brought to a nearby chiropractic clinic on her mother's advice. The therapist greets her with a gentle smile, but his touch gradually takes on a sinister tone. Under the guise of treatment, he begins touching Noa's chest and groin with lewd hands, pushing her toward her first ever orgasm. Overcome with tension and confusion, she finds herself unable to resist.