An urgent call from the clinic calls Dr. Felix Hoffmann in the late hours of the hospital emergency room, where he works as a ward doctor. When a patient dies in the emergency room, Dr. Hoffmann not of a natural death. Dr. Hoffman tells his girlfriend Celine about the mysterious case and both soon come to the conclusion that something strange is going on in the hospital. The two hobby detectives take on the investigation on their own and track down criminal machinations that extend as far as the clinic management.