It's the mid-1950s and Margot Thornsen is growing up between a Park Avenue apartment in New York City and her family's sumptuous Oyster Bay estate, as the presumed heir to her late grandfather's steel fortune. Stuck in the mores and bores of WASP society with its cocktail parties and white-gloved galas, Margot is constantly rubbing against the strictures of her domineering mother, who never misses an opportunity to lecture her on the importance...