A scientist, Professor Jakob ten Brinken, interested in the laws of heredity, impregnates a prostitute in a laboratory with the semen of a hanged murderer. The prostitute conceives a female child who has no concept of love, whom the professor adopts. The girl, Alraune, suffers from obsessive sexuality and perverse relationships throughout her life. She learns of her unnatural origins and she avenges herself against the professor.
A tourist guide in Naples is taken on by a Viennese woman impressed by his singing, and who regards him as her protege. This film was released as a German version and English Version known as "The City of Song". Brigitte Helm once portrays a beautiful femme fatale who displays her affection and lust for her tourist guide which is paralleled with the main bodied theme of the early romanticist songs played throughout.
