A group of young American heiresses are changed forever when they're whisked across the Atlantic to London.

Conchita hosts a raucous country house party. Jinny and Lizzy go head-to-head for the same man. Nan reveals a secret.

At the exclusive Tintagel ball, Nan considers the prospect of becoming a duchess. Conchita struggles with her mother-in-law's approval.

The girls return to New York for a grand celebration. Nan seeks answers from her family. James begins to manipulate Jinny.

The gang head to Scotland for a Christmas getaway. Lizzy makes a confession. James' behavior escalates. Nan faces a hard choice.

Nan must figure out her path forward. Jinny feels trapped. Mrs. St. George reckons with the state of her family.