In 1893, beautiful and vivacious Cora Cash is a "dollar princess" reluctantly brought to England by her mother the formidable Mrs. Cash in search of the "one thing she can't buy at home, a title." Cora thinks she is in love with Teddy, an American artist, but when she falls off her horse in a hunting accident and wakes up in Lulworth Castle, the seat of the 12th Duke of Wareham, all her certainties are challenged. Cora wants above all to do the right thing, but in the morally ambiguous world of the "naughty nineties" England where the first rule is never to comment on a likeness when visiting the nursery, she struggles to know what path to follow. Her mother Isabella meets her match in the Double Duchess, a woman who goes through dukedoms like kid gloves. Will Cora find a place in this world of intrigue where everyone knows the rules except her - will she choose the Old World or the New?