Haruna, a newly appointed female teacher, is assigned a class filled with students consumed by inferiority complexes. One day, a group of mischievous boys attempts to peek under her skirt during a game of "centipede." Overwhelmed, she nearly faints. The school janitor, Yanagimoto, rescues her from the situation—but he himself suffers from delusions of persecution, convinced that Haruna despises him. In the nurse's office, he rapes her and facially ejaculates on her face. The next day in class, Haruna is confronted with hidden camera photos of her own rape.