Two of London's most prestigious rival firms – Cathcarts and Taylor & Byrne – go head-to-head in the divorce case of the century: tech titan Morgan Henderson and his estranged wife, international film star Carla Duval. Each side is certain they'll win. But as the case spirals and loyalties fracture, reputations are on the line, and everyone's playing to win.

Bertha Russell changed Society at a cost. Now, her family must reckon with the consequences as Agnes van Rhijn seizes an opportunity to regain her position. Meanwhile, Marian forges a new path for herself, and Peggy works to be accepted by her future in-laws. In this new era, you must be careful what you wish for.