Vienna on the eve of World War I. The mysterious death of a young philosophy student is occupying the Viennese police. Sophia von Wiesinger, a law student and daughter of the lead investigator, tries to uncover the mystery surrounding her friend's death on her own. In her search for clues within their mutual friend group, she uncovers enigmatic connections. Was it suicide? When another body of a beautiful young girl is found, a terrible suspicion arises: Is a serial killer on the loose?.