What happened between Twilight's entrance exam and her entrance to the School proper? How Twilight met Celestia, Cadance, and Spike, and got started on the road to becoming the Element of Magic.
As kids, Twilight and Sunset were best friends, but a tragic accident cut their friendship short. Years later, Twilight investigates the incidents at Canterlot High and comes face to face with what appears to be a literal ghost from her past.
Too much of a good thing is filling the human universe, and Sunset Shimmer is the only one who can solve the problem before it annihilates her new home.
As punishment for her crimes, the Elements have cursed Sunset Shimmer to do favors for anyone who asks. Lucky her. And then there's that other Twilight Sparkle she keeps running into...
Every pony has a destiny—a reason for being. Sunset Shimmer has no cutie mark, and struggles just to feel like she belongs in this reality. But the price to find her purpose might be one too high to pay.
Sunset Shimmer really did not expect to wake up several years in past before she left through the mirror. Now she'll have to make due with her new reality, as well as two pestering princesses that won't leave her alone.
An accident with the Mirror Portal ends up with Twilight stuck as a small pony in the Equestra Girls' world. Her friends can't get over how cute she is.
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
When Sunset was hit by the rainbow, she lost everything. She had no friends, no family or at least a descent place to call her own. But when all seems lost, she not only found someone that care about her like a mother, but also someone very special.
The past always comes back to haunt the present, there is no escaping the inevitable. For decades, Celestia has kept a secret from her student. A secret she made out of pain, and through pain will be revealed for all to see; for Twilight Sparkle is
Sunset Shimmer has never needed anyone or anything - she had her magic, she had her ambition, and she had intellect. Others just stood in her way or held her down. So what do you do when your plans for world domination fall through?
Foals are often more than a hoof full, particularly if your experience with them is limited. When you make a rash decision, deciding to take care of a filly with near unlimited power for example; it becomes even more complicated.
New spells are fun, and Twilight loves practicing them. An ill-timed sneeze has made her latest spell go a bit out of control, though, and now she's stuck as a tiny kitten, trying to deal with a pony-sized world.