The Nun of Monza is the story of a Spanish nun named Virginia de Leyva (Anne Heywood). As Mother Superior, her convent is the picture of saintliness. That is until a young nobleman (Antonio Sabata) takes refuge there after killing a man. Then, all hell breaks loose. All those who inhabit the habit give in to temptation while hysteria and hypocrisy abound. The Mother is accused of breaking her vows and must endure harsh punishments including tortures both physical and psychological. One of the earliest examples of the Italian nunsploitation genre.