The future. Metropolis is a wonderful city, high above the ground its towers stand. The people prosper, the economy is flourishing, the suspended streets are busy. But Metropolis also has a great secret, so hidden that not even Freder Fredersen, son of founder Joh Fredersen knows about it. He is spending his free time in the Eternal Gardens, when suddenly a woman shows up, with what looks like a class of children. They're from the City of Workers, in the depth, Freder learns. "These are your brothers", she tells the children, before she is forced to leave. Freder is so intrigued he follows them into the depth and doesn't like what he sees. The workers are exploited, they must do labor like robots. Freder tries to convince his father to change, while the woman tries to keep workers' morale high by predicting a man will stand up that will mediate. Someone that will use both hands and head, someone that will be the heart.