Year: 1975
Country of production: France, West Germany, Canada
Original language: French
Genre: Erotic
Video: Color

A young photographer, always and only known by the initial of her name, "O", is led by her lover René to a castle, where she will be subjected to sadomasochistic rituals, until she is transformed into a pure and simple sexual object. Here she learns all the secrets of the art of sex and voluntary submission. At the end of her initiatory stay, before leaving, she is given an iron ring that she must always wear and that identifies her as a slave.

Year: 1975
Country of production: France, West Germany, Canada
Original language: French
Genre: Erotic
Video: Color

A young photographer, always and only known by the initial of her name, "O", is led by her lover René to a castle, where she will be subjected to sadomasochistic rituals, until she is transformed into a pure and simple sexual object. Here she learns all the secrets of the art of sex and voluntary submission. At the end of her initiatory stay, before leaving, she is given an iron ring that she must always wear and that identifies her as a slave.

Shortly after, "O" meets a model named Jacqueline, who soon proves to have a strong interest in the adventure lived by "O", literally seduced by what her friend tells her; at the same time René introduces Sir Stephen H. as the elder step-brother to his beautiful young fiancée. "O" is then invited by Sir Stephen to his country house, where Anne-Marie and other young women are located. The visit of "O" ends with the insertion of a series of ring-shaped piercings in her labia majora and, finally, Sir Stephen shares it with two other men, Ivan and "the commander", who can thus possess it freely and repeatedly.

Later, Sir Stephen, "O", Jacqueline and René go together to visit the "commander's" house. Later "O" accompanies Jacqueline to Roissy, where she will be trained to serve René as the perfect slave. Upon her return, "O" asks Sir Stephen if he would be able to endure the same pains and experiences she has endured, to demonstrate the unconditional love he feels for her. When the man replies "I think so".