Strict teacher Mio Kitagawa is feared by both students and staff. One day, overwhelmed by the urge to urinate, she heads to the restroom only to find it out of order. Forced to sneak onto the rooftop to relieve herself discreetly, she is caught in the act by a gang of delinquents secretly smoking. This moment marks the beginning of a horrifying ordeal. Throughout the film, Mio suffers repeated episodes of involuntary urination and humiliating public pissing, gradually losing her dignity as an educator. A tense, shame-filled narrative centered around the taboo theme of a female teacher who cannot control her bladder, delivering relentless humiliation and desperation.