在罗马，多多是一位大学讲师，主修法国文学。他卧床不起的父亲阿尔贝托也在公寓里，他的护士福斯塔（Fausta）照顾他的医疗和性需求。怯懦的多多对她的挑逗行为没有反应，并且被父亲的粗暴性行为所排斥。他的麻烦之一是他与已经去世的母亲太过亲密，母亲不仅不得不满足丈夫的需要，而且还不得不与无数其他女性分享他。但是他的主要问题在于他美丽而性感的妻子西尔维亚（Silvia），她轻轻掠过他的学校生活，却与另一个男人一起消失了。
下课后，一个叫Pascasie的非洲女孩叫他回到公寓，脱掉衣服，邀请他给她拍照。当她的室友回到家中时，当着他的面前发生了争吵，然后两个女孩开始做爱。多多始终是观察者，而不是参与者，让她们自己做。他越来越幻想着离去的西尔维娅（Silvia），以及他父母的性生活。一天晚上，父亲卧室里有一个神秘女人，而早上福斯塔说一定是西尔维娅，因为她还有门钥匙。然后，西尔维亚突然说她想回到公寓。
In Rome, Dodo is a university lecturer taking a class in French literature. Also in the apartment is his bedridden father Alberto, whose nurse Fausta looks after his medical and sexual needs. The withdrawn Dodo does not respond to her provocative behaviour and is repelled by the rampant sexuality of his father. Part of his trouble is that he was too close to his now dead mother, who not only had to meet her husband's needs but also had to share him with countless other women. But his main problem is that his beautiful and sexy wife Silvia, who breezed into his quiet studious life, has vanished with another man.
After a class, an African girl called Pascasie asks him back to her flat and strips off, inviting him to photograph her. When her flatmate comes home, after an initial spat over the presence of a strange man, the two girls start making love. Dodo, always the observer and not the participant, leaves them to it. Increasingly, he fantasises about the absent Silvia and about the sex lives of his parents. One night there is a mystery woman in his father's bedroom and in the morning Fausta says it must have been Silvia, because she still has a door key. Then, all of a sudden, Silvia says she wants to come back to the apartment.
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