Released in 1927, the groundbreaking silent film "Metropolis" is one of the first full-length sci-fi movies, and it includes one of cinema's earliest robots. The German film is set in a futuristic society where the rich rule in towers high above the city, while workers toil for them below. When Maria, a woman from below, brings a group of children to observe the rich for a day, the son of the society's leader, Freder, becomes disillusioned with his way of life. But as he grows closer to Maria, his father orders one of his underlings to create a robot version of her to stop her from starting a worker uprising. Instead, the man attempts to use the robot Maria to destroy the city of Metropolis entirely.