Maggie is an ordinary teenager living on the South East Coast of England. Helping out during the evacuation of Dunkirk, it becomes apparent that she and her younger brother Colin may have supernatural powers. Soon both are taken to London and recruited into a special group tasked with fighting the Gothi, a coven of 12 German teenage witches, hell-bent on crushing British resistance. As the Battle of Britain rages, Maggie meets and falls in love with Polish Spitfire pilot Michal. Will she be able to keep Michal safe? Will she, Colin and their friends manage to fight the overwhelming occult forces of the Nazi witches channeling the power of the ancient Aryan goddess Freya?