The Second World War is raging abroad when 18-year-old Kitty decides it's time to do her bit. So she joins the VAD (Voluntary Aid Detachment) as a nurse, going to work in the military hospitals of southern England. Helping the injured soldiers on the wards, Kitty sees the grisly effects of war at close hand - notably the casualties of Dunkirk. But the move from her comfortable, safe home environment to the harsh world of a wartime hospital will teach her a great deal about life and relationships...