La vie est dure, nous aussi is a sentimental comedy with a protagonist who is extremely discreet, extremely solitary and extremely egotistical. Charles, a native of Marseilles, is now living in Paris, and he has to take care of the dog of a girlfriend. He is also an insomniac and a hypochondriac. But he has one virtue: he loves to listen to people. Walking the dog opens up new territories for Charles who is discovering something new each day. One day a girl crosses his path, and he immediately recognizes her as the love of his life. There is one problem. How is he going to find her?

Mona is the girlfriend of Pierre, who is a member of a rather pathetic rock band in France. Their hero is the singer "Johnny Valentine " who, seeing that Mona is being neglected, decides to make her his own.

This uneven comedy of manners concerns a young film projectionist (Jerome Ange) who sets out to find a marriageable woman. He sets his sights on two women he has lived with for nearly ten years (Kristin Scott-Thomas and Sylvie Orcier). For some reason, the projectionist encourages one of the women to hire a private detective (Patrice Kerbrat) to monitor his romantic activities.

Jean and Julie meet again ten years after childhood. Jean has trouble recognizing the grown up girl. Julie is "promised" to Henri, a neighbor. Julie, scathing and capricious, provokes Henri and Jean.