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

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

The Brightlingseas host a New Year's Eve party where the bombshell news is the hot topic. Tensions flare as Theo and Guy's rivalry explodes.

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