This RP is based off the scene where Dark Oak Metarex made Sonic go Dark. You are Sonic.

You're in the Metarex base, in front of Dark Oak Metarex in his throne. He raises a black metal and glass orb, that holds Cosmo and Chris are very hurt, Cosmo is on the brink of death. The fake Chaos Emeralds are in a circle around you

Dark Oak Metarex: If you want to free them, you must be stronger than you already are.