Lauren, a lovely 29-year-old it-girl, tries to break into the world of fashion by skimming Parisian parties. Olivia, a 28-year-old psychologist, has two obsessions: to save the confectionery of her parents, and to find her ideal husband. At the age of 26, Salma, a fiery young history teacher, still lives with her mother in the suburbs. Their roads have no reason to cross - until the day when, on the death of their biological father that they never knew, they inherit together a splendid Parisian apartment. For these three sisters who have nothing in common, cohabitation will prove to be explosive, to say the least.