Set in the future, Metropolis is a grand city-state populated by humans and robots, the cohabitants of a strictly segmented society. Amidst the chaos created by anti-robot factions, detective Hunsaku Ban and his sidekick Ken-ichi are searching for rebel scientist Dr. Laughton. But when they locate him, his secret laboratory is destroyed by fire under sinister circumstances, and instead Ken-ichi finds Tima, a beautiful young girl bereft of memory and speech, seemingly helpless at the site. Little does he know that Tima is a new top-of the-line android created to take over Metropolis, and that behind her creation lie the ambitions of a powerful man and his fierce desire to reclaim a tragic figure from his past.