Urbain Donnadieu's first love is money. It's also his second, third and fourth love. The only reason he married - a tax inspector named Fleurette - was to avoid a fine for tax evasion. For several years, he has been stealing money from his construction company and buying gold bars with his ill-gotten gains. His plan is to deposit all this wealth in a Swiss Bank, where neither his wife - whom he is about to divorce - nor the French State can get at it. Accompanied by his money-grabbing Granny Zézette, Urbain heads off for Switzerland, with his gold concealed in the walls of a model house on the back of a trailer. Unfortunately, his scheme is threatened by his wife and his embittered ex-chauffeur, who are determined to get his money at any cost...

An attention-craving mother nearing 50, unemployed and living with her pregnant daughter and son-in-law, suddenly finds herself with child, too...

Two babies are switched at birth. When the mistake is discovered 12 years later, it leads to complications in the lives of both families. One family is affluent, with dutiful and (apparently) contented children. The other family is poor, with rambunctious (even delinquent) children, often hungry, but with lots of laughter in the house.

Nathan, 16, lives alone with his father Stephane. A newcomer in high school, he is invited to a party and falls in love with Louis, a boy in his class. They find themselves out of sight and kiss each other, but someone takes a picture of them. Soon, the photo is published on Facebook and a storm overtakes their lives as they face bullying and rejection.

Jean-Claude is a loud-mouthed, know-it-all and full time boor who is best friends with Stef, a self-styled lady killer who would do better with the fairer sex if he could work up the ambition to wake up in the morning. Stef has decided that he may need some help in finding the woman of his dreams, and embracing loyalty rather than logic he turns to Jean-Claude for advice.

Just as Simone works up the courage to tell her conservative Jewish family she's a lesbian, she finds herself attracted to a male Senegalese chef.