Ep 13. Mission to the Middle of the World

The Valyx, a rather unique earth-digging vehicle developed by Professor Prober, suddenly appears: ten years and half a world away from its initial plunge. But strange markings have appeared on its surface. Astro Boy, his sister Astro Girl, and a stowaway reporter, Reed Daley, take the Valyx back into the earth to investigate. Many miles down they discover a tribe of Deros, people who originally came from the lost continent of Atlantis. Using their destructive Rock Smog Machines, they intend to wage war on the surface people. Reed Daley turns traitor to help King Duba, but their ambitions are foiled by Astro Boy along with a fortuitous earthquake. The good robots return to the surface, wiser, but fearful that no one will believe their story. Of course, we know it's true!