The young lady, an undercover investigator, infiltrates a corrupt academy by assuming the identity of a female teacher to save it. Her strong sense of justice is exploited, and she is repeatedly raped one after another. During this process, her humiliating masturbation is exposed, dragging her into degrading gangbangs. Resisting proves futile as she can no longer endure the relentless creampie after creampie, until finally, in an ultimate climax, a cock is forced into her ass—an act she thought she'd never experience.