Set in the glittering, class-conscious city of London, the docu-series follows a group of elite British socialites, Annabelle Neilson and Caroline Stanbury, along with American expats, Juliet Angus, Caprice Bourret, Marissa Hermer, and Noelle Reno, who all run in similar social circles, but are worlds apart. From weekend getaways in the English countryside, to high tea at one of London's exclusive polo-clubs, both groups adhere to strict unwritten rules of engagement where reputation is everything.