At a school festival held in a Tokyo school, a class booth called "Massage Parlor" made its appearance. Students played the role of masseuses, offering realistic massage treatments as part of the event. However, some malicious men sneaked in and deliberately began introducing erotic elements into the act. Initially reacting with surprise and resistance, the girls gradually become flustered as their bodies start responding uncontrollably. This unfolds into an unexpected scenario, sharply contrasting the innocent atmosphere of the school festival.