When a mysterious black figure causes the heroes of Mobius to be transported to Equestria, it's up to Sonic, Shadow, and Silver to find a way home. Along the way, they meet the Guardians of Harmony themselves: 'The Mane 7'. Together they must defend Equestria from the evil forces that seek to control it, whether it be from Equestria, or Mobius. But little do they know, that their two worlds may be more connected than they think.