故事发生在19世纪,一个年轻骑兵军官被派到遥远的兵寨,不得不跟他那丰满的情妇分手,但到了新地方他迷上了长官的神秘表妹,一个长相怪异但欲火熊熊的女人,把他那已婚的情妇忘得一干二净。In the 1860s, Giorgio (Giraudeau), a young Italian soldier, is sent to a remote post, far away from his lover, Clara (Antonelli). He is lodged in the house of the colonel (Girotti). He becames friends with the colonel and the local doctor (Trintignant). Among the inhabitants of the house there is a strange young woman: Fosca (d'Obici) who is both unattractive and mad. However, she has a passion that Giorgio will have to cope with.