Well! Dance, now...

Recently, Tristan and his husband had a little girl together. But when he arrives to the nursery, Tristan realizes that not everyone sees his paternity the way he does.

Back to school for Ducobu, Léonie Gratin and Latouche. But this year, a major rival for Ducobu arrives at school: TGV, the king of cheating 3.0. While the financial situation of Saint-Potache becomes disastrous, the two dunces will have to unite their creativity to win a song contest and save their school.

Al, a young man from a modest background is about to marry his boss’ daughter, along with succeeding him as the head of a car dealership. One night, while coming back from his bachelor party, he is guilty of a hit-and-run accident, urged by his two childhood friends present in the car. The next day, gnawed with guilt, Al decides to inquire about his victim. What he does not know is that Juliette, a young woman, has witnessed the entire accident from her balcony.

David, a professor of dermatology, has been treating 13-year-old Romain since he was a baby. Afflicted with a rare skin condition, Romain must avoid sunlight and is condemned to live in the shade. David and Romain have become the closest of friends and nothing can separate them. But then David learns that he is about to be transferred to another clinic in another town. How will he be able to break the news to Romain? And how will Romain cope with this new crisis in his life?