Baron Frankenstein is researching the creation of life using body parts with the support of his assistant Dr. Charles Marshall. Out of the blue, his daughter Tania Frankenstein returns home after graduating as surgeon when her father is on the verge of discovering how to create life. However, he uses a damage brain of a criminal and his strong creature kills him. The efficient Captain Harris investigates the case while the creature proceeds in a crime spree, killing also those who robbed the graves to get its body parts. Meanwhile, Tania reads her father's journal and seduces Charles, convincing him to kill the retarded servant Thomas Stack. She promises to transplant his brain and heart to Thomas' beautiful body to marry him and kill the creature with his force.
—Claudio Carvalho, Rio de Janeiro, Brazil