 Medical student Frank Braun (Karlheinz Bohm) arrives at his uncle's estate, Professor Jacob ten Brinken (Erich von Stroheim), to ask for a loan in order to continue his studies to become a doctor.Instead he comes across a beautiful woman Alraune (Hildegard Knef) gazing outside on the second story of the house.Upon asking the maid (Gardy Brombacher), she claims to not know of any guests staying at the moment and to return the next day to see his uncle.