Princess Luna’s Parallel Equestria counterpart Satellite was already corrupted, and she planned on taking over Equestria with her sister. Eventually, she and Solar (Celestia’s counterpart) were humorously sealed in the sun (Satellite) and the moon (Solar) by Concord, the ruler of Equestria.
 
Moonlight Twinkle, the parallel version of Twilight Sparkle, set off on a quest to find the Elements of Harmony with her friends Party Cake (Pinkie Pie), Fancyjane (Applejack), Curebug (Fluttershy), Greybow Ash (Rainbow Dash) and Scarcity (Rarity). When they got there, the evil of Solar and Satellite transformed them into evil versions of Moonlight Twinkle’s friends: Cakeamena, Fancyvain, Bitterfly, Blackout Crash and Ragity. They set out to conquer their own land in Parallel Equestria. As for Moonlight Twinkle, she could never find happiness again.