1939 – Europe is at war. In a bid to shock her upper class family, young socialite Mary North volunteers for to help in the war effort. In no doubt that the talents will be quickly deployed into some spy mission on the continent, it is to her great surprise when she finds she has been assigned the role of school teacher. And yet through this role she will meet people, children and parents alike, who will begin to change her whole understanding of not only the war but herself. While neither her parents nor her friend can understand the change in Mary, she Is determined to keep to her promise to be there for the children, in particular Zachary Lee, a young black boy with whom she has struck up an unlikely friendship.