Thomas has promised to organize New Year's Eve. He's in a panic and doesn't take the time to listen to Aude who tells him that she won't be at the party. Thomas, furious, pushes the boys to go flirting on the ski slopes in order to find girls for New Year's Eve. When Aude and Nath, feeling guilty, decide to join them in the snow, they get upset. Nath breaks up with Laurent and Aude makes Thomas understand that he is nothing but a dirty egoist. To make up for his mistakes and try to repair Nath and Laurent's relationship, Thomas will transform into Julia to flirt with Laurent, while Marc will flirt with Nath on his side: which will make them understand that they still love each other. Unfortunately his plan turns into a disaster. New Year's Eve seems definitively abandoned especially when Thomas discovers what Aude has to undergo cosmetic surgery. Will Thomas manage to save New Year's Eve and prevent Aude from doing something stupid while revealing his true feelings to her?