Broadcaster Nicky Campbell discovers more about how his mother Sheila helped take on the Nazis during World War II. As he uncovers the secrets of her service with the Women's Auxiliary Air Force, finding out about her pivotal role in the D-Day landings, Nicky gets a taste of what life as a wartime radar operator would have been like for his mother. And there is a proud moment for the entire family as Sheila's wartime service at last gets official recognition.Nicky also meets a veteran of bomber command who, like his mother, wrestled with the morality of bombing German cities, as well as the young RAF women doing his mother's job today, keeping a vigilant watch over Britain's skies.