This way-offbeat comedy from Gallic director Jeanne Labrune concerns two young French women, best friends Léa and Jacinthe. While Jacinthe develops a fixation with the moths that begin to cluster in frightening quantities throughout her apartment, Léa finds herself drawn to a dim-witted fellow employed by a local supermarket, then impulsively decides to follow him home via train. When Léa mysteriously disappears during the days that follow, Jacinthe naturally grows concerned about her friend and decides to investigate.
An unexpected phone call from a certain Kirsch sets off a crisis between Catherine and Raphaël that will affect all those around them, be they close friends or casual acquaintances.
Odile is a business executive looking for a new, bigger apartment. Her younger sister Camille has just completed her doctoral thesis in history and is a Paris tour guide. Simon is a regular on Camille's tours because he's attracted to her. Camille has fallen for Marc, and they begin an affair. Nicolas is also looking for an apartment, since he hopes to eventually have his family join him in Paris.
Christmas time is over. Monsieur Hulot’s Christmas tree is dying. He decides to save it and plant it right in the middle of the rotary, the only remaining plot of land in this urban environment. Hulot is helped by his little neighbor, Louis, a great fan of his whimsy and eccentricities – much to the discontent of his father, who happens to be the borough mayor. But the tree grows so tall that it creates a joyful chaos! So much so that by the following Christmas, the mayor decides to get rid of it, and thereby end the bond his son shares with Hulot. The decision is made to chop the tree down! But instead, with the help of Louis, Hulot, a bit of snow, a little touch of magic and a lot of love, life turns into a “jour de fête”, a never-ending celebration!