After Celestia humiliates her at a dinner, Luna storms off and ends up snooping around in her sister's room. There, she stumbles upon the journal Celestia kept immediately after the banishment of Nightmare Moon.
Everyone knows that Princess Luna was banished to the moon for a thousand years, but what most people do not know is that she did not stay there the entire time.
Teen Titans/MLP crossover. Raven wakes up in Twilight's body and has to find out what happened and how to fix it. Finding answers proves difficult, despite welcome asistance.