Doctors Frankenstein and Clerval are working on a method to breathe new life into an artificial human being made up of body parts using chemical substances and electricity. When Clerval suffers a fatal heart attack, he completes his colleague's work by implanting Clerval's brain into an artificial creature. The creature not only comes to life, but also proves to be extremely capable of learning, so that it can even be introduced into the higher society. But the decay of the dead flesh cannot be stopped and the creature tries to take its own life. It cannot die and later wants to return to Frankenstein to undo the accidental death of a woman, but meets his rival Polidori, who is pursuing his own sinister plans ...