For Tim Roxham a young railway policeman and Fay Rossiter the problems of relationships across the social divide in pre-war England pale into insignificance when Mr Chamberlain's tired voice announces that the country is at war with Germany. Now it's not just their love that is threatened but their very lives. Against a background of increasingly disturbing events in Europe and fierce resistance from Fay's wealthy family and friends they fight for their relationship in the face of adversity. But as the war rips them apart only time will tell if they are strong enough to win through.