Taking up residency with relish in the trapped-with-crazies subgenre, Rollin reteams with porn star Brigitte Lahaie, casting her as a near-amnesiac who finds herself under the care of suspect doctor Bernard Papineau (a Claude Chabrol veteran). Transferred to a high-rise overrun by head cases too far gone—and with unchecked rutting tendencies—she resolves to escape with past/present acquaintance Dominique Journet, leading to unexpected revelations.