After seven years of marriage, a couple of professional workers (he, a doctor and she, a banker) try to refresh their sex life.

The Three Wise Men – Balthazar, Melchior and Gaspard – are on their way to Bethlehem to pay homage to the infant Jesus when they are suddenly, an inexplicably, transported two thousand years into the future. They find themselves walking the streets of Paris, where they encounter a young woman called Macha who, they are convinced, will lead them to the newborn Messiah.

Three half-brothers are reunited at their mother's funeral. After being told of their inheritance they quickly spend the money, only to find out that they will not receive it after all. The men grow closer while deciding how to proceed.

Two physicians, one old and one young, fall in love with the same woman, Juliette, a quixotic hairdresser. First, she is with Raoul, the older one; then passion for Clément, the younger doctor, takes over. Raoul fights back, playing on Clément's guilt and Juliette's lack of self-assurance; then, Clément makes his case to Juliette, abandons his fiancée, and takes her to the provinces where he sets up practice and asks her to have a baby. She panics and abruptly leaves Clément, taking up with Raoul again. When she contracts Hodgkin's disease and the treatment does no good, Raoul believes she has the malady of love. Is there a cure?