Madeleine, 92 years old, calls a taxi to take her to the retirement home where she will be living. Charles, a disillusioned driver with a tender heart, agrees to drive by the places that affected Madeleine’s life. Through the streets of Paris, her extraordinary past is revealed. They don’t know it yet, but they will forge a friendship during this drive that will change their lives forever.

Mathias, a down-and-out New Yorker, travels to Paris to liquidate a huge, valuable apartment he has inherited from his estranged father. Once there, however, he discovers a refined old woman, Mathilde (played by Maggie Smith), living in the apartment with her daughter Chloé.