In the industrial, tri-level world of Metropolis, Duke Red is a powerful leader with plans to unveil a highly advanced robot named Tima. But Duke Red's violent son Rock distrusts robots, and intends to find and destroy Tima. Lost in the confusing labyrinth beneath Metropolis, Tima is beginning a friendship with the young nephew of a Japanese detective. But when Duke Red separates the the innocents, Tima's life - and the fate of the universe, is dangerously at stake.