An emergency call is received by the Bremen police, cries for help can be heard. A short time later, the body of a young woman is found in a park. The massive injuries to the dead man's neck pose a particular mystery to Bremen's chief inspectors Inga Lürsen (Sabine Postel) and Stedefreund (Oliver Mommsen). A traumatized eyewitness can only provide investigators with the disturbing clue "vampire". While Inga Lürsen puts together the clues and clues step by step, Stedefreund gets caught up in a feverish whirlpool of mystical superstition. When the investigators meet Nora Harding (Lilith Stangenberg) and her father Wolf Harding (Cornelius Obonya), events take a turn for the worse.