The New Adventures of Superman S03 E08 Rain of Iron (2)

Superman tracks the iron spheres to their source. They come from space, but are being bounced off an asteroid from a remote island in the Pacific. Professor Dujy and Vamore live on the island. When Superman comes to stop them, they try to take Lois hostage. Superman rescues Lois and sends Professor Dujy and Vamore to prison.