When not trying to find an apartment for his difficult clients, Nicole (Laura Morante) and Dan (Lambert Wilson), Thierry (André Dussollier) tries to charm his alluring but saintly co-worker, Charlotte (Sabine Azéma).
She lends him a tape of her favourite religious TV programme, but Thierry’s in for a huge surprise. Meanwhile, his sister, Gaëlle (Isabelle Carré), is on a quest of her own to find the love of her life.
With the help of Lionel (Pierre Arditi), a friendly bartender, she meets Dan and they get on well until Gaëlle spots Dan with Nicole. Dan confides in Lionel, who has hired Charlotte as a night nurse for his terminally sick and unbearably rude father, Arthur. Charlotte performs a miracle in getting Arthur to behave himself. She leaves behind a tape of her “favourite religious TV programme”...