Christmas 1913: Kitty and Lady Partita are best friends despite vastly different backgrounds. Partita has invited her friend, Kitty to stay at her ancestral home, Borders Castle. The grandeur of Partita’s family seat is in stark contrast to Kitty’s home in London where she and her mother, Violet, struggle to maintain appearances despite Kitty’s father gambling away the family money. Kitty is introduced to the aristocracy — a world she finds fascinatingly decorative and theatrical. She is enthralled by it, and desperately wants to be part of this way of life that is so far removed from the genteel poverty in which she and her mother are forced to exist. But war breaks out, not only irrevocably changing society, but also the lives of these two beautiful young women. The headstrong Partita and down-to-earth Kitty become nurses, caring selflessly for men who have been horrifically injured in the trenches.