Poet Siegfried Sassoon survived the horrors of fighting in the First World War and was decorated for his bravery, but became a vocal critic of the government's continuation of the war when he returned from service. Adored by members of the aristocracy as well as stars of London's literary and stage world, he embarked on affairs with several men as he attempted to come to terms with his homosexuality.

A film screener at the BBFC, who has earned an unsavory reputation for being the strictest censor of violent films, begins to spiral out of control after viewing a low budget horror movie with similarities to the disappearance of her sister.