WWII. A secret arm of the British government called the MINISTRY OF UNLADYLIKE ACTIVITY is training up spies. When May and her friend Eric are turned away by the Ministry, they take matters into their own hands. Masquerading as evacuees, they arrive at Elysium Hall, home to the wealthy Verey family. It soon becomes clear that one of the family is passing information to Germany. 10+ Start of a thrilling and highly-anticipated new series set during WW II.