Angela is not happy about her daddy's choice for a new wife and does everything she can to destroy her stepmother-to-be, including sleeping with her.
Young Angela, who is tied to her father by morbid affection does not accept that her father, the widower Dr. Batrucci, will marry Irene. After investigating her past, she learns not only about Irene's lesbian tendencies, but also that her stormy relationship with a female high school teacher led her to commit suicide due to the scandal. She decides to seduce her and they have lesbian sex which is photographed by Sandro, a gigolo. She uses the photographs to blackmail her, but the matter inevitably ends up getting out of hand.