Metropolis (1927)

This influential German science-fiction film presents a highly stylized futuristic city where a beautiful and cultured utopia exists above a bleak underworld populated by mistreated workers. When the privileged youth Freder (Gustav Fröhlich) discovers the grim scene under the city, he becomes intent on helping the workers. He befriends the rebellious teacher Maria (Brigitte Helm), but this puts him at odds with his authoritative father, leading to greater conflict.