Finally, the holidays are here! Vlad and his friends are so excited! Jérôme, Vlad’s father, is in charge. André, the grandfather of Jeanne and Basile, is also here to help. Six kids, two adults, an eight-hour train trip. Nothing could go wrong. But Jérôme and André miss the train… and watch it leave the station with the kids on board. It’s the beginning of a crazy race for the unlikely duo. While the unsupervised children go wild and have the time of their life, André and Jérôme go through various delays and adventures…

When Ricardo, a responsible father, decides to personally take his son to a camp in Asturias, other parents propose that he should also take care of their children. When the train is about to leave, Felipe, a flamboyant individual and grandfather of two of the children, shows up at the station.

On Christmas Eve, we want everything to be perfect, yet things often go sideways. The holidays are a reality check for everyone, whether life is looking bright or dark. This Christmas, the residents of one Parisian apartment building are going to share an unforgettable holiday. They hardly know one another, only exchanging brief greetings when heading to work or taking out the trash. But this year, when neighbors who are jazzed-up, or depressed, or awed by the magic of Christmas find themselves thrown together, sparks will start flying.

Missing the train is very bad. Seeing it leave with your children and those of your friends you had to accompany on vacation is a whole other story ... that of the crazy pursuit from Turin to Sicily of a father and grandfather as different as they are unreliable.