Upon birth, baby Cindy Cathcart was left on the doorstep of the Terrible Reform School for Juvenile Delinquents, where she was raised around other delinquents and began a life of crime at an early age. Now, she is seventeen years old and the Reform School Commission decides to try an experiment of sending Cindy to an exclusive European finishing school, hoping that will help turn her life around. She arrives at the von Pupsin Academy for girls in Switzerland at the start of the winter semester. As Cindy walks from the train station to the academy, a Porsche sports car hits her and knocks her to the ground. The driver, Lord Alexander “Alex” Snivelroe, a student at the nearby von Dorkenberg Academy for boys, and his girl friend, Lady Hillary Haverstock, another von Pupsin student, give Cindy a ride, but Hillary quickly becomes jealous of Alex’s attention to the girl. At the von Pupsin Academy, headmistress Fraulein Frieda Stinkenschmidt, a strict disciplinarian, welcomes the two dozen students, explaining the academy will train them to assume their “rightful position beneath the men who rule.” Girls who fail to conform to the school’s standards will be expelled, but those who graduate will be perceived by the world as “royal virgins.” The academy’s owner, Countess von Pupsin, a friendly and funny woman, also welcomes the girls warmly. Later, Fraulein Stinkenschmidt becomes angry as she rants to her assistant, Alphonso Drago, that she does most of the work, but Countess von Pupsin takes the credit. Fraulein Stinkenschmidt secretly plots to take over the academy. Cindy meets her roommate, Lady Pamela Lennox, an activist at heart who finds the academy boring and pretentious. Seeing Cindy unpack, Pamela realizes her new roommate is poor and offers to lend Cindy her clothes until they have time to buy her new ones. Pamela is delighted to have a non-aristocratic roommate, believing the academy needs reform, but advises Cindy to keep her social standing a secret for now. Although rich, pampered and snobbish, the girls play pranks on each other in between classes in subjects like table manners, credit cards and plastic surgery. The Countess emphasizes that the girls must learn duty, etiquette, and good conduct. In sexuality class, Fraulein Stinkenschmidt explains that a wife’s job is to service her husband until a male heir is born, at which time her husband will take a younger mistress and the wife can concentrate on matters such as shopping. Taking a dislike to Cindy, Fraulein Stinkenschmidt believes the Countess hired the girl to spy on her and promises good grades to any of the girls who can prove it. When Fraulein Stinkenschmidt catches one of the girls having sex with a boy, she angrily reminds them no boys are allowed on campus. However the girls routinely ignore this rule, talk frequently about their sexual conquests, and even have a “whore horn” on the dormitory hall which they sound whenever one of them has an orgasm. The girls from von Pupsin Academy meet the boys from von Dorkenberg Academy for ice skating on a frozen pond. The boys and girls pair up for skating and Alex Snivelroe flirts with Cindy, to Hillary’s consternation. A snowball fight between the boys and girls erupts. Meanwhile, Countess von Pupsin is delighted to have the attention of her old lover, Baron von Dorkenberg, the owner of the boy’s academy. Their assignation is interrupted by young student Lulu Belle who needs boyfriend advice. The Countess advises Lulu Belle not to regret what she does in life, only to regret the things she does not do. Sometime later, the girls go to a party in town with many boys. However, the location turns out to be at a brothel and Fraulein Stinkenschmidt raids it, trying to catch the girls with the boys. The newspaper covers the scandal and many parents threaten to withdraw their daughters a day before graduation. Hillary finds proof Cindy is not on the social register. Cindy packs her bags to leave, but the other girls are upset by her departure, so Cindy returns. Meanwhile, Fraulein Stinkenschmidt is delighted to be rid of Cindy, but the girls want revenge on her. They slip an aphrodisiac into the Fraulein’s tea and set up a video camera in her office, where they see the Fraulein and her assistant, Alphonso Drago, become intimate. They also learn that Stinkenschmidt has been siphoning money from the academy and the Countess will soon be bankrupt, at which time the Fraulein plans to take over the academy. The girls plan to take the videotape to the police, but the Fraulein has some of the boys from von Dorkenberg Academy arrested. Student Izzie, the daughter of an Italian Mafia boss, contacts her Uncle Constantine for help and he lends them a military tank. The girls drive the tank to the jail and break the boys out. During the graduation ceremony, the girls present the tape to Countess von Pupsin, and Drago confesses that the stolen money is in a Swiss bank account. The Countess punches Fraulein Stinkenschmidt, then hands out diplomas to the girls. Afterward, Alex professes his love to Cindy.