A humiliated female teacher gradually develops a demon-like body that invades from between her legs, nesting in her lower abdomen with a faint fever and multiplying uncontrollably. Night after night, she is pierced by brutal lust, burned as if by fire, and overwhelmed by a horrifying pleasure akin to being torn apart. A man and woman, forgetting their roles as educators, indulge in a forbidden relationship with a fellow teacher. Their intertwining desires and guilt manifest in a grotesque, otherworldly scene.