The students of a prestigious law school try their best to mess things up.

A film producer on the verge of ruin decides to make an erotic film.

Four generations of Oppenheim men gather in Paris for Isaac's 90th birthday. He's "Romeo," still a lady's man, waiting to hear from a woman to whom he has proposed, threatening suicide if she says no. They gather at Isaac's grandson's, Ben, who lives with Peggy and their son Mathias who's 10. Joining them, from Israel, is Isaac's son Elie. Against a backdrop of Elie's attempts to call his ex-wife, Ben and Peggy's marital difficulties, Mathias's budding sexuality, everyone's love of chess and practical jokes, Ben's house (shifting dangerously on its foundation), and the twentieth-century struggles of the Jews, the film explores their relationships and Isaac's aging.

Following a car accident, four men find themselves in the hospital, where they sow discord. Meanwhile, their wives take full advantage of their newfound freedom.

In Saint-Rupert, Basse Lozère, the son of a family of garbage collectors, Pissenlit, who has played the mentally deficient since childhood so as not to be forced to go to school, is in fact a prodigy in mathematics: by reading a book found in a trash can, he revolutionizes a mathematical theory. Meanwhile, his father is making a computer from objects recovered from garbage cans, and capable of composing musical "hits" that may make him a star.

The series follows the adventures of lighthearted Jean-Paul Moulin, a police Commissaire, and his team as they solve crimes.