In a dark castle in Europe, the renegade descendant of the famous Victor Frankenstein becomes obsessed with perfecting his own version of the monster. Dr. Friedrich Frankenstein, brilliantly portrayed by Boris Karloff, has been experimenting with the remains of an ancient being created by his grandfather, desiring not only to revive it but also to have absolute control over life and death. However, his ambition leads him to dangerous limits when a group of filmmakers decides to shoot a horror movie in the same castle.
The filmmakers, realizing that the presence of the enigmatic doctor could add authenticity to their production, invite him to join the shoot. What seemed like a mutually beneficial deal soon turns into a deadly game when Frankenstein's monster begins to come to life from each part of the chilling creation and starts to hunt the crew members. Tensions rise as the characters must confront their own fears and the dark legacy of the castle.
As the plot unfolds, the line between reality and fiction blurs, leading the protagonists to a terrifying climax that tests their sanity and their will to survive. This story marks a gripping journey through classic horror, where the scientists' past intertwines with the present, reminding us that some ambitions can have unexpected and tragic consequences—all while the machinery of cinema reveals its darkest side.