They're all here – The Wolf Man, Dracula, Frankenstein's Monster, angry villagers and even a hunchback assistant in the House of Dracula! Horror veterans Lon Chaney, Jr. as the Wolf Man and John Carradine as Dracula arrive at the laboratory of Dr. Edelman (Onslow Stevens) to beg for a cure to relieve them of their killing instincts. However, while the Wolf Man is sincere, Dracula is really just scheming to get close to the good doctor’s luscious nurse (Martha O'Driscoll) whom he intends to seduce into becoming one of his "brides of darkness." The mayhem and madness reach a feverish pitch when the doctor discovers the body of Frankenstein's Monster and begins to bring it back to life. All of this is more than the nearby villagers can stand as they become determined to stop the lunacy that threatens the safety of their families and their town.