This documentary series explores the history of the Windsor dynasty, which was founded in 1917 when Germany and Britain were at war. A combination of new research and evidence, assistance from family insiders, and access to Windsor Castle's royal archives has provided an understanding of how this royal family has survived a century of great change. We learn how George V rebranded the family from its original German roots, and how Edward VIII almost ruined the dynasty with the abdication crisis in 1936.