Tony and Nanar, two teenagers who met in reform school, are part of a gang of idle, penniless youngsters from the Paris suburbs. Together, they go to dances and plan mischief. The muse of the gang, B.B. La Brune, organizes leisure activities when she's not up to no good. Unemployed and penniless, they all dream of consumption and possession. Until the day a fight turns ugly: Tony, trying to reason with Nanar, pulls the trigger.

While on a train to Rome, Léon muses about his love life after leaving his wife.

Determined to assert his paternal rights, Quentin leaves his small village on the Swiss border to go to Lyon to look for his daughter, now a hairdresser, who, busy with her work, hasn't been back to the village for two years. In a few days, it will be Denise's birthday, the youngest of his daughters, and, urged on by his wife, he sets off, determined to bring the prodigal son back to the family celebration. But Denise is now living off her charms.

In the seaside town of Rochefort, twin sisters Delphine and Solange dream of love and artistic fulfillment beyond their quiet lives. As sailors, artists, musicians, and chance visitors pass through town during a weekend fair, a web of near-misses and romantic longing brings ideal partners tantalizingly close—without their realizing it.