Brideshead Revisited movie plot

The story begins in Britain on the eve of World War II. Describes the life and Fate or Destiny of a Catholic family at Brideshead Manor near London . After the First World War, the old Marquis of Marchmain left his family to live in Venice for a long time with his mistress; the scandals of the parents' life left a humiliating mark on their children and distorted their nature. The book's narrator, Ryder, is also a participant in the story, witnessing the fall and decline of this unfortunate family. Religion can't save them either. The author pays tribute to the prosperous and prosperous past of Brideshead with a desolate mood, and also reflects the thoughts of British intellectuals after World War II, and reflects their memories, sorrows and disappointments.