In the summer of 1926, Thelma Morgan arrives at the Paris Ritz still stinging from the heartache and humiliation of her failed marriage. Her twin sister, Gloria, newly and blissfully wedded to Reginald Vanderbilt and with a baby in tow, has invited her to spend the summer, and though romance is the last thing on Thelma's mind, she can't deny that Reggie's friend Duke Furness is as charming and dapper as he is keen to win her affection. When Thelma marries Duke, a British viscount, she finds herself immersed in a gilded world of extraordinary wealth and aristocracy. In a twist of fate, her second marriage leads her to fall headlong into a love affair with Edward, Prince of Wales. But happiness is fleeting, and their love is threatened when Thelma's sister becomes embroiled in a scandal with far-reaching implications. As Thelma sails to New York to support Gloria, she leaves Edward in the hands of her trusted friend Wallis, never imagining the consequences that will follow.