The American Gilded Age was a period of immense economic change, of great conflict between the old ways and brand-new systems, and of huge fortunes made and lost. Against the backdrop of this transformation, young Marian Brook moves from rural Pennsylvania to New York City after the death of her father to live with her thoroughly old-money aunts. Accompanied by Peggy Scott, an aspiring writer seeking a fresh start, Marian inadvertently becomes enmeshed in a social war, between one of her aunts, a scion of the old-money set, and her stupendously rich neighbors, a ruthless railroad tycoon and his ambitious wife. Exposed to a world on the brink of the modern age, will Marian follow the established rules of society, or forge her own path?
Marian’s grand plan is threatened. Bertha and Mrs. Astor lock horns over Gladys’ debut. Peggy is stunned by a major reveal.
Mr. McAllister’s visit to the Russells shakes the aunts’ household. George aims to control the narrative. Marian considers her feelings.
Peggy reveals the truth about her past, while George’s day in court arrives, and Marian considers her romantic future.
Marian receives a visit from Tom Raikes, whose legal advice Peggy seeks. The Russells take center stage at a charity bazaar.
As a historic moment captures the city, Agnes vows to protect her family’s reputation, while Larry’s career plans rub George the wrong way.
George faces a surprise development. Marian sees Mr. Raikes against Agnes’ wishes. Ada runs into an old friend. Peggy gets an opportunity.
Bertha, Marian, Aurora, and Peggy make an overnight trip to see Clara Barton speak. Gladys’ desired beau is invited to dinner.
Marian learns more about Mrs. Chamberlain. George makes a deal to benefit Bertha. Peggy meets a trailblazing newspaperman.
In 1882, Marian arrives at the home of her “old money” aunts Agnes and Ada, whose new neighbors vie to break into New York high society.