Fritz Lang's towering silent-era achievement imagines a stratified future metropolis where a wealthy elite lives in gleaming towers while an exploited underclass toils in subterranean machine-factories, until the ruling class's idealistic son falls for a working-class prophet preaching reconciliation, sparking a robotic doppelgänger's scheme to incite revolution instead. Lang's expressionist production design — the vertiginous cityscapes, the iconic Maschinenmensch robot — established visual language that countless science-fiction films would borrow for the next century. Heavily cut and altered for decades before a nearly complete restoration surfaced, it remains one of the most influential films ever made.