In 1940, during the Blitz, with London and other urban centres in England under constant nightly bombardment. parents have to make a momentous decision to protect their children. While anti-aircraft guns fire at the raiders, families seek shelter in air-raid shelters, ever fearful of being bombed. When Canada offers to take refugees, the first 1,500 children to be evacuated to Canada come from London, Dover, Portsmouth and the industrial north, all locations where German air raids are taking place.