Delinquent high school girl Riko is taken to the student guidance room by rookie teacher Hikaru for a baggage inspection. While being lectured, a prank pie is discovered, causing Riko to snap and throw it directly at Hikaru's face. The impact leaves Hikaru disoriented, and she is quickly choked unconscious by a hold. From that moment, the once-sacred student guidance room transforms into a twisted scene of "reverse discipline," where the female students turn the tables on the unconscious teacher. Hikaru lies with her eyes rolled back, covered in cream, stripped of her clothes, mocked in her underwear, and exposed with her breasts on display. When she regains consciousness, another pie is smashed into her face, causing her to suffocate and black out again. Yet upon waking once more, Hikaru burns with rage and launches a counterattack. After a fierce struggle, she ends up drenched in cream, eyes rolled back, unconscious—her appearance warped into something resembling a beautiful woman turned into a bizarre, helpless object. The scene evokes a strangely comical yet erotic atmosphere.