"Thanks for the Memories" The Metal Men are dispatched by the U.S. military to recover a meteor which has fallen to Earth! But they discover and prevent someone else attempting to steal the meteor. As Doc Magnus is analyzing the metal contained in the meteor, his lab is attacked by Dr. Tonegawa, of Bundai International, and his giant robot M2. Dr. Tonegawa wants the meteor and Magnus' responsometer technology and he doesn't care how he gets them! In the battle, Doc Magnus makes a last stand at Level 12, even firing on his own Metal Men! What is Doc trying so desperately to protect?