Marc, a surgeon at a hospital, is murdered on December 31. When his ex-wife, best friend and a police lieutenant find themselves stuck in the same elevator, they emerge from it and realise they have moved a year back in time.

Welcome to Dad’s... Or rather, to Dad's Girls : Bébérénice, Roxane, Ondine and Panda! Four sisters – 2, 8, 12 and 18 years old – as different as each of their respective mothers! On the other hand, they share the same actor father who has ot himself the part of his life by taking care of his four beloved daughters.

25-year-old Antoine has Down syndrome. His father raised him as a normal child without the limitations that his disability could create: he has a job and loves to let off steam with his friends by lifting weights at the gym. Bianca, the same age, lives with Dimitri, and has plans to marry Dimitri and buy a restaurant. She has given up her dream of singing, her words, her melodies, in front of an audience. Thanks to Antoine, Bianca reveals herself and reconnects with her desires and dreams. Thanks to Bianca, Antoine experiences the thrill of love and the happiness of being treated like others--and, above all, the satisfaction of being treated like a man.

Camille's life changes when the man she loves disappears overnight after emptying his bank account.