Chapter 12: The
Return Home and the Metarex
As soon Eggman, Sonic and his friends got home they still had a lot to do. Without warning and before Sonic could get back to visit his family a figure in armor appeared above the planet and he wanted the Chaos Emeralds. Sonic got them first and went to his Super Form to fight off this opponent and his army. As expected, in a split second the army was destroyed but the figure in armor was still standing. The two fought for what seemed like hours and Sonic was exhausted while his opponent seemed unscratched. In his last effort to stop him, Sonic used Chaos Control to scatter the emeralds across the galaxy and falls back to the planet. Sonic's opponent then goes off in search of the emeralds and leaves a robot behind.
After the fight an escape pod crashes on Sonic's planet, inside was a plant based creature named Cosmo and Chris had found a way to Sonic's world. Cosmo had come to warn Sonic about Dark Oak, but it was to late, Dark Oak was the opponent Sonic was fighting above the planet. Cosmo also warned that Dark Oak would be after the Planet Egg, the very essence of a planet that fuels all life. Sure enough the robot Dark Oak left behind was supposed to collect the Planet Egg. Sonic and Knuckles tried to stop it while Tails worked on a spacecraft to go in search of the emeralds before Dark Oak finds them. The robot succeeds in extracting the Planet Egg and the plant life starts dying. When the spaceship was ready everyone left in search of the emeralds. But Doctor Eggman also made a spacecraft and followed Sonic and friends with. What Eggman didn't know was that he had a stowaway, Rouge the bat. With everyone heading out for the emeralds it was a war zone, Metarex against Sonic, Sonic against Eggman and Eggman against Metarex.