Paris 1920. When Coco Chanel meets Igor Stravinsky, the exiled composer accepts the wealthy designer's offer to bring his family to summer at her villa. Soon she and her guest embark upon an affair which is complicated by their rigid devotion to their work, and Stravinsky's commitment to his family. The two lovers must consider the depth of their feelings, and whether, with the autumn drawing in, theirs is a relationship that can survive.