The Sonic X World: Extra story

In Collab with Tashasaurous. This story follows up after Sonic Prime escape the first world and arrived in Sonic X world in Eggman Nega return. What if Cosmo and Shadow are still alive after the Metarex war. With the new evil forces around, Sonic Prime team up with his alternate version and the gang to find the Chaos Emeralds to return to his friend while fighting the news enemies.