Terence Davies' heartbreaking biopic explores the turbulent life and times of First World War poet Siegfried Sassoon, portrayed by Jack Lowden and Peter Capaldi during different stages of his life. Sassoon was a complex man who survived the horrors of fighting in the First World War, but became a vocal critic of the governments continuation of the war when he returned from service. His story is one of a troubled man who's constantly searching for peace and self-acceptance in a fractured world.