When Princess Celestia comes down with a mysterious illness, Sunset takes it upon herself and Twilight to get to the bottom of it, which would be hard enough if she wasn't dating the other Twilight in secret.
The world is falling apart as Twilight goes on a power hungry rampage through Equestria. Now, Celestia must defeat her prized pupil, and closest thing she ever had to a daughter.
Twilight Sparkle learned what Celestia was training her for at a young age. With years of preparation and forewarning the battle between Twilight and Nightmare Moon went very differently.
Princess Celestia finds a baby Changeling Queen during her travels. She had intended to bring her back to Canterlot only temporarily, until she could find the hive the Queen belonged to. For now though, the Changeling Queen was just Twilight Sparkle
We all know in the main universe, Twilight Sparkle and her friends saved the world from Nightmare Moon. But what if in another, it was just the dreams of delusion...
Five hundred years ago Celestia's neice was born. Since then Celestia has sought out proper foster parents for the unique foal. All of that has now changed. Celestia and Twilight are on their own.
Princess Celestia recounts her dealing with her guilt over ignoring Twilight Sparkle's warnings about the royal wedding, and the role she has let her student play in fighting threats to the kingdom.