From Oscar® and Emmy® winner Julian Fellowes, the creator of Downton Abbey, comes a sprawling HBO® drama centered on the conflict between old and new money in New York's glittering high society during the late 19 century. In a time of immense economic change, where fortunes are amassed and lost in the blink of an eye, Marian Brook (Louisa Jacobson), the orphaned daughter of a Union general, moves to Manhattan and becomes entangled in the social war between her aristocratic aunts (Christine Baranski and Cynthia Nixon) and their stupendously rich neighbors (Morgan Spector and Carrie Coon). Exposed to a world on the brink of the modern age, will Marian follow the established rules or society or forge her own path?