In post-World War II London, Ada Harris (Academy Award® nominee Lesley Manville) earns a living cleaning houses. She's led a lonely life since her beloved husband Eddie went missing in action, but she's not the type to brood over any misfortune or to complain about her circumstances. Still, when the ever-pragmatic Ada spies an unimaginably lovely Christian Dior gown hanging in the master bedroom of a wealthy client, she's surprised to feel an overwhelming pang of desire. Owning something so ethereal, so beautiful, a true work of art—why, that could really change things for a person. After taking on extra jobs and saving as much as she can—even trying her luck at the race track—Ada finally can afford to pay for a Dior dress. She bids farewell to close friends Vi (Ellen Thomas) and Archie (Jason Isaacs) and makes her way to Paris to visit the prestigious House of Dior and turn her dreams into reality. Yet when she arrives, Ada is met with a series of surprising setbacks, not least of which is Dior's intimidating Madame Colbert (Academy Award® nominee Isabelle Huppert), who bristles at the very notion of a common charlady wearing haute couture. Still, whatever obstacles are thrown her way, Ada refuses to leave Paris without her dress. Her unwavering commitment charms idealistic Dior accountant André (Lucas Bravo), kindly model Natasha (Alba Baptista) and the aristocratic Marquis de Chassagne (Lambert Wilson), Paris' most eligible bachelor. Ada soon discovers that in changing her own life, she begins to change the lives of all those around her. She might even help save the House of Dior itself. Adapting author Paul Gallico's 1958 novel Mrs. 'Arris Goes to Paris for the screen, writer-director Anthony Fabian creates a winning, modern-day fairytale about pursuing your dreams, the power of friendship and the importance of remaining true to who you are.