This week at the Institute, Christmas is fast approaching! On this occasion, the competition rages… In the running, Lionel's brigade for a traditional Christmas, supported by Clotilde. Facing them, Emi's brigade for an atypical Christmas, supported by Teyssier. At the heart of this confrontation, a sibling quarrel: Zoé and Lionel have declared war on each other. And in this kind of conflict, all shots are allowed, even the lowest… For his part, while Christmas is already here, Gary still has no idea for a gift for his girlfriend, Zoé. Fortunately, Solal saves the day. Concerned about Zoé's happiness, he organized everything so that the Lanneau father came to the Institute. Gary takes ownership of the idea, thus getting credit for Zoe's joy. Stuck in a terrible love triangle, Solal must endure seeing the girl he loves with someone else. The situation crumbles when Gary expresses doubts about his relationship. Is he really in love with Zoe? When the latter learns the truth about her father's return, she loses her temper with Gary. Without premeditating it, she naturally falls into Solal's arms… Watch “Here it all begins”, Monday to Friday at 6:35 p.m. on TF1. Find all the episodes, extracts and bonuses every day on TF1+.