The scientist ten Brinken manages to artificially inseminate a prostitute with the sperm of a murderer. Thus, Alraune comes into the world. Grown up to a young woman, she falls in love with ten Brinken's nephew Frank. But Frank turns away from her when his uncle tells him the story of Alraune′s birth. Alraune takes revenge by plunging all men who come too close to her into ruin. When Frank returns, Alraune's magic power that brought ten Brinken happiness and wealth vanishes. To recover her power, ten Brinken informs her about her true origins. Alraune dies in the ensuing scrimmage.