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 Ban Hunsaku 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.