It's been two years since Sonic and Shadow defeated Discord and now thanks to Sonic's friend Tails they can return to the land of Equestria. But when they get there they learn that their old enemy Mephiles The Dark has returned and has the five of the main six under his control and Twilight and the princesses as his prisoners. Can Sonic and Shadow along with their friends stop Mephiles before it's to late? Or will Mephiles finally get his revenge?

*note* This story contains five of the six Elements of insanity and contains Nyx from Pen stroke's Past Sins. Although this story features Pen Stroke's Nyx (Past Sins), this story itself is not related to Past Sins, nor does it require a reading of Past Sins. And although this story contains five of the six Elements of insanity I don't own them all the credit goes to their creator theinvertedshadow.