Paris. Richard, and Italian doctor who has been living in France since a very young age, meets and marries Nicole, a beautiful woman belonging to a very good family, who works for the diplomatic corps.
The newly-weds have just finished to furnish their house when Nicole is told she has to move to the Frech Ambassy in Rome, where Richard was born. Not far from Farnese Square, where the Ambassy is located, an old but lively married couple live in a big and ancient Patrician building.
The two old people, thanks to the doorkeeper and her husband’s aid will sell Richard and Nicole their house, pretending to be seriously ill. Therefore, Nicole e Richard will buy a building that they will own only when the two old owners die.