On the cover, we see a picture of the mechanical woman that is supposed to be a substitute for Hel a woman of Metropolis in 2026 that is watched over by Johhan 'Joh' Fredersen (Alfred Abel). He stole the heart of Hel from C.A. Rotwang, der Erfinder "The Inventor" (Rudolf Klien-Rogge) and married her. It was speculated that Hel fell for Joh's position of power more than love. Hel dies in childbirth.
Rotwang being lonely invents a robot replacement for Hel. Rotwang loses a hand in the process. We see the machine person Hel on the poster the same way Joh saw it when he learned of its existence.
Meantime it looks like Jon's son Freder Frederson (Gustov Fröhlich) has been smitten by a kindly girl Maria (Brigitte Helm) with a mission. This mission is stated in the beginning credits as the "Head" and the "Hands" will be brought together by the "Heart."
Joh must squelch the son's infatuation with Maria and put the workers in their place.
Looking at the sight of Rotwang's machine person, an evil plan forms in Joh's mind. Little does he know what plan is in Rotwang's mind.
However, we do.
Hel is the name of the queen of Helheim, the Norse underworld.
This is a 1927 movie, made at the UFA studios. Learn more of UFA in the book "The UFA Story: A History of Germany's Greatest Film Company" by Klaus Kreimeier. It is quit innovative with the visuals. Different versions have different background music. The film misses the message of the book but stands well on its own.The Ufa Story: A History of Germany's Greatest Film Company 1918-1945