The film continues on from the highly popular television series, following the Crawley family, wealthy owners of a large estate in the English countryside in the early 20th century.

The film features an all-star cast including Maggie Smith, Matthew Goode, Michelle Dockery, Tuppence Middleton, Elizabeth McGovern, Allen Leech, Joanne Froggatt, Hugh Bonneville, Imelda Staunton, among others.