A crime writer on a train to Berlin shares her compartment with a mysterious man who claims to be a cannibal. Initially intrigued, she tries to humorously dismiss his claim while her imagination sparks a new novel featuring Detective Rosa Roth, who investigates a similar case. As the journey progresses, the writer’s confidence fades, replaced by fear and mistrust. The man’s behaviour becomes more unsettling, especially after a young girl reports inappropriate comments from him. In the dining car...