Adeline's Chinese housekeeper suddenly disappears, leaving behind a little boy who doesn't speak a word of French. Helped by her sister, she takes care of the child and proceeds to locate the mother.
Anne Walberg is a celebrity in the world of perfume. She creates fragrances and sells her incredible talent to companies of all kinds. She lives as a diva, selfish, with a strong temper. Guillaume is her new driver and the only one who is not afraid to stand up to her. No doubt this is the reason why she does not fire him.
Two young girls meet, Reinette from the countryside and Mirabelle from Paris, and decide to take a flat together in Paris where they attend University. Four successive stories about their daily lives illustrate the very different views, characters and relation to the world of these two friends.