Dr. Frankenstein and his monster both turn out to be alive after being attacked by an angry mob. The now-chastened scientist attempts to escape his past, but a former mentor forces him to assist with the creation of a new creature.
Baggage handlers Bud and Lou accidentally stumble upon Frankenstein's Monster, Dracula and the Wolf Man.
Frankenstein's unscrupulous colleague, Dr. Bohmer, plans to transplant Ygor's brain so he can rule the world using the monster's body, but the plan goes sour when he turns malevolent and goes on a rampage.
Blackmailing a young couple to assist with his horrific experiments the Baron, desperate for vital medical data, abducts a man from an insane asylum. On route the abductee dies and the Baron and his assistant transplant his brain into a corpse. The creature is tormented by a trapped soul in an alien shell and, after a visit to his wife who violently rejects his monstrous form, the creature wreaks his revenge on the perpetrator of his misery: Baron Frankenstein.
Grave robbers open the grave of the wolf man and awaken him. He doesn't like the idea of being immortal and killing people when the moon is full so tries to find Dr. Frankenstein, in the hopes that the doctor can cure him. Dr. Frankenstein has died; however, his monster is found.
One of the sons of late Dr. Henry Frankenstein finds his father's ghoulish creation in a coma and revives him, only to find out the monster is controlled by Ygor who is bent on revenge.
Baron Victor Frankenstein has discovered life's secret and unleashed a blood-curdling chain of events resulting from his creation: a cursed creature with a horrid face — and a tendency to kill.
Deranged scientist, Gustav Niemann, escapes from prison and overtakes the director of a traveling chamber of horrors, soon reviving the infamous Count Dracula, the frozen Frankenstein Monster, and the Wolf Man.
A deformed tormented girl drowns herself after her lover is framed for murder and guillotined. Baron Frankenstein, experimenting with the transfer of souls, places the boy's soul into her body, bringing Christina back to life. Driven by revenge, she carries out a violent retribution on those responsible for both deaths.
Dr Simon Helder, sentenced to an insane asylum for crimes against humanity, recognises its director as the brilliant Baron Frankenstein, the man whose work he had been trying to emulate before his imprisonment. Frankenstein utilises Helder's medical knowledge for a project he has been working on for some time. He is assembling a man from vital organs extracted from various inmates in the asylum. And the Baron will resort to murder to acquire the perfect specimens for his most ambitious project ever.
Earl Williams is a dreamer teenager obsessed with monsters, who fantasizes his life as if he were living in the world of the monsters of Universal Studios. Although being an excellent student, his intolerant and nasty school teacher Mrs. Perdue does not like him and punishes him for any minor fault. His supportive father Les Williams is also a dreamer, who has never been successful in life. When his father dies, his mother becomes lost with two boys, and tries to change the behavior of Earl. One day, the boy finds the "true Frankenstein" lost by a Carnival, and decides to bring the monster back to life.
When Dr. Frankenstein is killed by a monster he created, his daughter and his lab assistant continue his experiments.
Once hounded from his castle by outraged villagers for creating a monstrous living being, Baron Frankenstein returns to Karlstaad. High in the mountains they stumble on the body of the creature, perfectly preserved in the ice. He is brought back to life with the help of the hypnotist Zoltan who now controls the creature. Can Frankenstein break Zoltan's hypnotic spell that incites the monster to commit these horrific murders or will Zoltan induce the creature to destroy its creator?
Dracula conspires with a mad doctor to resurrect the Frankenstein Monster.
Rescued from the guillotine by his devoted dwarf Fritz, the Baron relocates to Carlsbruck, where he continues his gruesome experiments.
Young Victor Frankenstein, a cold, arrogant and womanizing genius, is angry when his father Alphonse forbids him to continue his anatomy experiments. He ruthlessly murders Alphonse by sabotaging his shotgun, consequently inheriting the title of Baron von Frankenstein and the family fortune. He uses the money to enter medical school in Vienna, but is forced to return home following an affair with the daughter of the schools Dean. Returning to his own castle, Victor sets up a laboratory and starts a series of experiments involving the revival of the dead. He eventually builds a composite body from human parts, which he then brings to life. The creature goes on a homicidal rampage until it is accidentally destroyed when a little girl accidentally causes the vat in which it has been hidden to be flooded with acid, leaving behind only the creature's shoes floating on the surface.
Mad Dr Frankenstein recruits an evil dwarf, a Neanderthal man, and others to help him put a brain in the body of a brute.
During WWII, Germans obtain the immortal heart of Frankenstein's monster and transport it to Japan to prevent it being seized by the Allies. Kept in a Hiroshima laboratory, it is seeming lost when the United States destroys the city with the atomic bomb. Years later a wild boy is discovered wandering the streets of the city alone, born of the immortal heart.
After the death of Victor Frankenstein, two figures vie for control of his monster and the radical technology that created him: the scientist's daughter, and an immortal wizard assisted by a blind bird-woman with an unquenchable thirst for blood.
The baron's grandson rents the family castle to a TV crew to fund his atomic revival of the family monster.