Lorelei, a pretty orphan girl, is driven by misery to take refuge at the manor of her uncle and guardian, Doctor Frankensberg. This one, non content to be a disquieting man, is engaged in weird experiences. Among other creatures, Frankensberg has managed to give life to a horrible monster, Torticola,his damned soul. But when the mad scientist decides to transfuse Lorelei's blood into Torticola, the creature rebels and sets the young woman free, letting her flee with Eric, the cat-man.