This historical drama follows the lives of the Crawley family and their servants in the family's Edwardian country house. The programme begins with the 1912 sinking of the Titanic, which leaves Downton Abbey's future in jeopardy, as Lord Grantham's presumptive heir -- his cousin James -- and his son, Patrick, die aboard the ship, leaving him without a male offspring to take over the throne upon his death. As a result, Lord Grantham must search for a new heir. As the programme progresses through the decade, other historical events happen leading up to Lord Grantham declaring in 1914 that Britain is at war with Germany, marking the beginning of World War I, which becomes a major plot on the programme.
