The life of psychiatrist Dr. Sorgenfrei is not an easy one. He spends the whole day dealing with patients and their abstruse thoughts. Just as he is about to go home for a well-earned rest, a new patient takes him by surprise and asks him for an impromptu consultation. When Dr. Sorgenfrei agrees, his routine day takes a completely different turn, as the new patient turns out to be a serial killer in the course of the consultation.