A man refuses all assistance from his daughter as he ages and, as he tries to make sense of his changing circumstances, he begins to doubt his loved ones, his own mind and even the fabric of his reality.
The beloved Crawleys and their intrepid staff prepare for the most important moment of their lives. A royal visit from the King and Queen of England will unleash scandal, romance and intrigue that will leave the future of Downton hanging in the balance.
Dido Elizabeth Bell, the illegitimate, mixed-race daughter of a Royal Navy admiral, plays an important role in the campaign to abolish slavery in England.