Elisabeth Richard, a district attorney, and Paul Jansac, a police officer are in charge of the investigation of the death of Pierre Saint-Florent whose corpse was found in a beach near Martigues.

Gabriel can't resist a beautiful woman. But his womanizing attitude is taking a toll on his career and social life. He decides to hire a life coach to help him.

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?

Ariane, a young French violinist, accepts the marriage proposal of Christen, an irresistible conductor. Only problem: she's a little bit ... married! Separated for two years with Nino, an Italian teacher with a strong character, she manages to convince him to follow her to Paris to divorce in 8 days flat. But their trip in the city of love looks much more eventful than expected...