Julie, a woman who is unlucky in love despite her bubbly demeanor. Her job at a bookstore takes an interesting twist when she discovers a book titled "Happiness Can Be Learned," and she sets out to fix her love life once and for all.
Michel dreams of a perfect meeting with the woman of his dreams, entirely due to chance, as his parents and grandparents experienced. Vincent, Michel's contrast, is completely different. He is more the man of the direct approach and he follows his...! The two childhood friends Michel and Vincent, with completely opposite views when it comes to women, soon discover the limits of their respective techniques when they meet Angèle and Nathalie.
Éric and Patrice have been friends since high school. Over the years, they have both taken very different paths: Éric has become a hedonist, has a string of girlfriends and is always on the look out for a new one; Patrice has become a monogamous father with a very ordered life. After a drunken evening, the two childhood friends find themselves cast back into 1986, when they were 17 years old. This return to the past is a dream opportunity to try to change the path their lives will take. What will they do with this second chance?
Willy Vander Brook, a world with Franco-Belgian roots, travels to Paris for an interview. He is welcomed by his childhood friend Serge, an ex pub operator, and his roommate Frank, a fierce supporter of the Walloon independence. When Willy discovers that his candidacy is not accepted because he is Belgian, he and his compatriots decide to take revenge
