Where did the Royal Pony Sisters come from? Are there others like them? If so, are they as wonderful and caring as the Sisters? Whether Equestrians wanted to know or not, they're fated to find out.
Over a thousand years ago a the Dark King conqured the Crystal Empire. But what happened before that event? What connection does Sombra have with Celestia?
Celestia wakes up as a human. But hasn't she always been that way? Or is the doctor at the mental hospital creating false memories? But...why would he do that? He just wants her to get better. Doesn't he?
Thanks to the love bomb at the Royal Wedding, Princess Celestia is revealed to be a Changeling Queen. How will Equestria, deal with this? And why is Celestia a Changeling Queen in the first place?