Following the events of M&EG 1: The Equestria Girls accidentally found the portal into Mobius. Now they will have to help the Mobian Heroes save their dimension from an evil from another world. (Sound familiar) Will they succeed?
Sonic, Shadow, and Silver have been sent to the human world of Canterlot High, to save it from the eternal darkness. Along the way, they will make new friends, meet old and new enemies, and much more.