Sarah finds out she's pregnant just as she's about to go out to dinner with all her friends. The news doesn't seem to please her. She begs her boyfriend Malik to keep his mouth shut.
Sarah is increasingly annoyed by Malik's enthusiasm. Aless, who occasionally sublets her apartment, spends the night clubbing and then - in bed with her two tenants.
Sarah discovers that Enzo's death has had a huge impact on Lucas and his family. Aless begins to worry about her mother who has an increasingly strange attitude.
Sarah, three months pregnant, tries to keep her promise to Lucas and take a paternity test. Aless, meanwhile, is very worried about her mother's health.
The group meets at Sophie and Vince's for the preparations for the annual weekend at the Eau d'Heure lakes. But Lucas' financial situation somewhat dampens the general enthusiasm.
Lucas decides to come to the Eau d'Heure lakes for the weekend anyway, despite his money worries. Sarah doesn't understand what made him change his mind, she's suspicious.
The group spends the weekend at the Eau d'Heure lakes. Everyone is in a festive mood, except Sophie. She overheard an exchange of messages on Vince's phone.
Saturday: relaxation: Everyone has plenty to say at the breakfast table. Notably about the noise that kept them awake all night, and whose room was it coming from? Sophie, increasingly on edge, takes her anger out on her children.
Oh, bu**er 2!: Malik's proposal is a complete fiasco. And to make things even worse, Sophie surprises Aless taking drugs in her bedroom. She hits the roof.
Thanks for the trust: After the weekend they'd just spent, Sophie decides it's time to have things out with Vince. Max is stressed out by his neighbours' noise, and Karim pays the price.
Call me. It's urgent: The friends try to heal their wounds. Vince tries again to persuade Sophie that he is totally innocent, but she no longer trusts him.
Malik wants to give their relationship one more chance. But their feelings have changed. Karim accompanies Max to a therapist to try to calm the tensions.