A man arrives one night by train to Stockholm Central Station. The man has lost his memory. Newspapers report about an escaped insane sex offender, and the man dreads that it might be him.
In a café at the train station the man meets a waitress named Auri. She realizes that the man has no money and no place to go. He tells her about his situation. She offers to pay for his food and to take him home with her. The man, who calls himself X, and Auri start to trace his repressed memories and past life, while he dreads to find out why and what he fled.