Julie Ballenger has spent five years in a psychiatric clinic. Leaving the clinic apparently cured, she is hired by a wealthy industrialist, Mostri, to work as a governess to his young nephew, Thomas. The boy is heir to a huge fortune after the recent death of his wealthy parents who died in mysterious circumstances. During a visit to a park, Julie and Thomas are kidnapped at gun-point and driven away to deserted quarry. The two hostages manage to escape, but are closely pursued by an armed killer...

Police inspector Léonetti, a tough, efficient policeman, has been sent to a second-rate police station after being reprimanded. There he is given a partner, young and beautiful Jeanne Dumas. The duo are soon assigned a very difficult mission: to find a man whose evidence is instrumental in convicting a murderer. They start searching throughout Paris.

亚历山大是一个年轻而诚实的农民，他受到专制妻子的压迫，妻子让他像狗一样工作。妻子因车祸去世后，他决定躺在床上，完全自由自在，无所事事。只有一条狗负责为他运送食物和报纸。
当他的妻子去世后，亚历山大决定将自己的全部精力投入到他的伟大爱好中：养狗。他睡了几个半月。他的儿子对美丽的阿加特说了些什么，阿加特最后说："我想你会喜欢我的。然而，就在他向她求婚的那一刻，他却遭到了背叛，他的自由和他的爱情都受到了威胁。