Freder（Gustav Fröhlich 饰）是大都会主宰 Joh Fredersen（Alfred Abel 饰）的儿子。经一位圣洁姑娘（Brigitte Helm 饰）启示，Freder 来到地下目睹了在此劳作的劳工们悲惨的境遇。Freder 向父亲进言，想改变劳工们的处境。但 Joh 不为所动，却对从劳工们身上发现的地图感到忧虑。为弄清地图所示，Joh 不得不向老对头 Rotwang（Rudolf Klein-Rogge 饰）求教。地图所示究竟为何地？劳工们为何要去那里？Sometime in the future, the city of Metropolis is home to a Utopian society where its wealthy residents live a carefree life. One of those is Freder Fredersen. One day, he spots a beautiful woman with a group of children, she and the children who quickly disappear. Trying to follow her, he, oblivious to such, is horrified to find an underground world of workers, apparently who run the machinery which keeps the above ground Utopian world functioning. One of the few people above ground who knows about the world below is Freder's father, Joh Fredersen, who is the founder and master of Metropolis. Freder learns that the woman is Maria, who espouses the need to join the "hands" - the workers - to the "head" - those in power above - by a mediator or the "heart". Freder wants to help the plight of the workers in the want for a better life. But when Joh learns of what Maria is espousing and that Freder is joining their cause, Joh, with the assistance of an old colleague and now nemesis named Rotwang, an inventor, works toward quashing a supposed uprising, with Maria as the center of their plan. However, Joh is unaware that Rotwang has his own agenda. But if any of these plans includes the shut down of the machines, total anarchy could break loose both above ground and below.