An emergency call is received by the Bremen police, calls 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 neck of the dead pose a particular mystery to Bremen's chief inspectors Inga Lürsen and Stedefreund. A traumatized eyewitness can only give the investigators the disturbing clue “vampire“. While Inga Lürsen is putting the clues and clues together step by step, Stedefreund gets caught up in a feverish whirlpool of mystical superstition. When the investigators meet Nora Harding and her father Wolf Harding, events roll over.