A story about two couples, longtime friends in which both husbands engage in long-term affairs and, as the title says, ultimately one remains with his wife and one makes a new life with another woman.

It's New Year's Day. Antoine Garnier has decided to invite all his family and friends to dinner at his house the day after New Year's Eve. But the family being large, he is going to be overwhelmed since no less than 35 guests are expected.

When Camille falls ill, she is forced to live with Philibert and Franck.

A professor and his protege's search for Dracula leads them to a group of nuns who have held a young woman captive, so she can be married off the vampire.