This is my take on what a portion of Rainbow Rocks could've been. It even includes some accusations from Twilight while the gang is being trapped under the stage and there is a detailed friendship lesson in the end.
(Warning: contains season 5 finale spoilers) After redeeming Starlight Glimmer, Equestria finally seems at peace. But when a new foe literally falls from the sky, Twilight and her friends must band together to stop him from destroying everything...
Twilight manages get permission for the mane six to visit Equestria High, but what a pair of tricksters mess with the portal? What if some sparks fly with some eggheads? Can the six find a way home with the help of their new friends Dipper and Mabel?
When hearts and hooves day comes along and When hearts and hooves day comes along and fluttershy still hasn't told her crush she loves him what will happen