Mathias Gold, an American writer down on his luck, thinks he's found a new lease on life. He has inherited a large, luxurious Paris apartment overlooking the Jardin Luxembourg that he desperately wants to sell. But there are unexpected encumbrances -- the very French, very determined 94-year old Mathilde and her equally intractable daughter. They seem to have moved in for life. Mysteries and histories unravel, as these three learn how radically lives can change in one short week, especially when you're living in the city of lights.