Les lendemains de veille tells the story of Vincent, Malo, Lola, Matéo, Blaise and Xavier. At the time they were young and had a dream, that of living together; free and autonomous. And this dream had a name: "The community of the days before." However, their group ended up doing like everyone else and they gradually lost sight of each other. They hadn't made a date in the future, but the death of one of their own decided otherwise.

Alexandre, a somewhat lost thirty-something, decides to start out in the professional world. Loris, his misanthropic roommate, works on a universal method to succeed in life, and Patrick, Alexandre's father, decides to stop his chemotherapy. Everything is on track, until Manon shows up in their lives.

Philip Doom, a wealthy American industrialist who attempts to reconnect with his daughter Madeleine during a luxurious trip to Paris. Unfortunately, French cuisine, a 1950s horror film and an intrusive hotel employee disrupt the smooth running of their stay.