Chapter 16: Metarex Downfall

Sonic and Eggman combined their forces to finish off the Metarex. As they arrived Dark Oak and two of his accomplices were preparing for their "Forestation", using the seven chaos emeralds and a giant planet egg. They transformed into large plant like dragon heads spouting from the planet egg. The three of them assaulted Sonic and Eggman's ships while Sonic and Shadow, powerless to stop them, held them off from the others, so that Tails may ready the Sonic Power Cannon and fire at Dark Oak. With success Sonic is fired from the cannon at Dark Oak and the planet egg, creating an opening. Unfortunately Sonic finds himself trapped inside the egg. Amy rushes to free him but also ends up trapped as Dark Oak enters his final transformation, transforming himself and the egg into a giant seed that begins to slowly drain the energy from the animal life across the galaxy and spreading it through the plant life.

Sonic eventually breaks free and as everyone is wondering about the seed, Shadow goes in for an attack, Sonic follows in and hits the seed with a spin dash. The attack releases a dark energy that attacks Sonic and Shadow.

Meanwhile Team Chaotix retrieved the chaos emeralds. Unfortunately the emeralds where completely drained of their power. Eggman comes in with a plan to restore the emeralds energy using the energy of both ships. Matters worsened as Sonic and friends lost their energy to the seed. Cosmo, being a form of plant life, was immune to the seed, she proceeded to bring the emeralds to Eggman so that he may restore their powers. Dark Oak quickly controls the plants around the ships to attack Cosmo and she losses the chaos emeralds to space.

Suddenly the planet eggs inside the seed react to the emeralds and restore everyones energy and the chaos emeralds back to normal. Sonic and Shadow then use the emeralds powers to enter their super forms and rush to stop Dark Oak.

Super Sonic and Super Shadow break into the outer shell of the seed to destroy it. To their surprise the seed begins to implode once the shell was destroyed. The gravity generated by the seed was compressing the planet eggs inside, tighter and tighter until they would explode and destroy the galaxy. Super Sonic and Super Shadow charged but were powerless to penetrate the energy field now surrounding the seed. Super Sonic says to use the power of both ships to fire him at the seed. Chris warns Sonic that smashing into that gravity field might be to much for his body to take, there was a good chance Sonic wouldn't even survive the attack. Super Sonic refuses to allow anyone to talk him out of it.

Meanwhile Cosmo receives a message from her mother telling her that she can save the galaxy. Without hesitation, Cosmo flies off to help Super Sonic and Super Shadow, dissolving the gravity field as she heads towards the seed. Cosmo transforms into a giant tree planted into the seed weakening it's gravity to ensure Super Sonic and Super Shadow safe passage. Super Sonic then returns to the ship and gets ready to be fired from the Sonic Power Cannon. Super Shadow appears shortly after him and they both prepare to be launched from the cannon simultaneously. When the time comes to fire the cannon, Tails hesitates, not wanting to harm Cosmo. Cosmo convinces Tails that he must fire the cannon to save the galaxy and to allow the seeds of Cosmo's children to spread throughout the galaxy. Tails continues to hesitate in tears but eventually agrees to help Cosmo and fires the cannon. Super Sonic and Super Shadow are launched at the seed, completely obliterating it. Cosmo did not survive the attack, but her seeds spread across the galaxy. Super Sonic and Super Shadow used chaos control to return the planet eggs to their original planets.

Suddenly matters worsen as the seed becomes unstable after loosing the planet eggs. Though the explosion would not destroy the galaxy, both ships would be destroyed, and without any power they could not escape. Super Sonic reacts quickly and tries to get everyone out of there. Super Shadow quickly knocked Sonic unconscious, knowing Sonic wouldn't have enough time to get everyone away before the seed exploded. Super Shadow uses his power rings and all the energy he had left in his body to freeze the seed in time permanently with chaos control. Shadow gave up everything to save everyone again... this time he may not have survived. Sonic returned to the ship and talked to Tails. He had looked everywhere for Cosmo but only found a seed, which he gave to Tails who was still grieving over Cosmo.

Afterwards Sonic and friends returned home to their planet. At Eggman's base, Rouge was staring at Shadow's stasis pod, where he had slept since they left Chris' world. Eggman came in and couldn't believe Rouge was worried about him. Rouge denied that she had any concern for him. Eggman continued to ensure her that Shadow wasn't finished, that Shadow was created by the genius Doctor Robotnick as the ultimate life form. Rouge asked where Eggman thought Shadow was, but did not receive an answer, although she could tell he knew something.

Later Chris receives a message from Eggman saying that it's a one way ticket home. Eggman designed a ship that could send Chris home. Unfortunately there was a limited time window before Chris was stuck in this world. Chris only had three minutes before travel was impossible. Chris got in without hesitation, feeling bad about not saying goodbye to all of his friends. He hoped they would understand. Just as he was leaving he noticed Sonic running along the ground below him. They both watched each other as Chris flew off. Afterwards everything went back to normal Sonic and Eggman continued their quest to obtain all seven chaos emeralds.

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I'll start chapter 17 after exams so around first week of February
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