With the Edwardian Empire coming to a close, Christopher Tietjens enters into a destructive marriage with cruel socialite Sylvia. He Ignores her constant flirtation with other men as he resolves to remain faithful to her, even after he encounters fearless young suffragette Valentine.
With many vicious rumours about Christopher circulating, it leads to tragedy at his family estate, Groby. Sylvia finds a new admirer who proves a distraction as the war continues and Valentine moves to London. Edith and MacMaster make plans for a new life together.