Sister Gertrude, a nun who works in a Catholic hospital for the elderly, returns to her profession after healing from surgery to remove a brain tumor. Unfortunately, her horrible anxiety after the surgery causes her to believe the tumor has returned; this, in spite of Dr. Poirret's assurance there is no such evidence indicating that. The Mother Superior of the convent is convinced Gertrude is just being a drama nun. Sister Mathieu, who has an unspoken sexual attraction to Gertrude, not surprisingly believes the woman's fears are legitimate. What no one knows, is that Gertrude has started to lead a double life, venturing into the city at night and having hot sex with random partners. She also begins to abuse morphine, which Sister Mathieu steals for her from the hospital. Soon, Dr. Poirret notices the nun is mistreating her patients and deriving great pleasure in telling the gory details of the tortured saints to the bedridden, elderly captives. When Poirret tries to address this weird behavior, Gertrude finds a way to get him fired. Soon, patients are being bludgeoned to death and falling out of windows. Is Gertrude possessed by the Devil, or just a sicko, psycho woman in a penguin suit?

DVD-R has both Italian and English audio tracks with switchable English subtitles. Approx. 87 mins. See film sample for audio and video quality!