Release Date: 15 March 1956, USA
The crew of the military vessel C-57D travels to planet Altair to investigate the fate of the Bellerophon expedition. Ignoring warnings radioed from the surface, they land on the surface where officers Adams, Farman, and Doc meet Morbius, his daughter Altaira (aka “Alta”), and his domestic servant robot Robbie. The same invisible terror that had killed every other member of the expedition begins to threaten the military crew. Adams and Doc confront Morbius, only to learn that he has been hiding the secrets of an ancient alien technology beneath the surface of the planet. They discover that it is Morbius’ use of this Krell technology that created and controls the monster. Morbius faces the monster and dies, but not before instructing Commander Adams to destroy the planet and save humanity from the temptation of using it and repeating his mistake.
Release Date: 10 January 1927, Germany
After falling in love at first sight with Maria, Freder leaves his idyllic life in the Upper City. In the Lower City he learns of the plight of the laborers and witnesses a tragic explosion. He speaks with his conniving father Joh, who instructs a spy to keep tabs on his son.
Freder switches places with a laborer only to be drawn into an underground resistance, where he learns Maria is its spiritual leader. Meanwhile Joh meets with the mad scientist Rotwang and sees his robotic creation, the Machine-Man. Joh tells Rotwang to use the robot to end Maria and dispirit the resistance. Rotwang captures Maria and gives the Machine-Man her likeness.
Machine-Maria ruins Maria’s reputation with lascivious public performances. She then foments an insurrection in the Lower City. The mob storms the gates and ruins the vital Heart Machine. The city begins to flood. Maria escapes her captor and rushes to the laborers city, to be reunited with Freder and save the children who had been left behind.
Grot reminds the rabble of their abandoned children. Suddenly terrified, they conduct a witch hunt for Maria. They find Machine-Maria and burn her at the stake, who transforms as she is dying back into the robot.
Meanwhile Rotwang has re-captured Maria. In a great struggle atop the roofs of the Upper City, Feder defeats Rotwang and saves his beloved. Afterwards at a public gathering she declares him the Mediator, a savior who was foretold to bring the long-parted classes of the Metropolis together.