On secret assignment from Princess Celestia herself, Twilight investigates a powerful magical artifact for clues to the mystery of Luna's transformation in the evil Nightmare Moon. Incautious use of the artifact sends Twilight hurtling back in time. Can Twilight discover what caused Luna's transformation? And will she ever make it home again?

Kickass cover art used with permission from Bitz.
http://allthebitz.tumblr.com/

Twilight Sparkle, Celestia and Luna are transported into a strange alternate Equestria, the Land of Always Summer, where the day lasts forever and a terrible queen rules with an iron hoof.

Feel free to check out or add to the story's TV Tropes page.

This story is a sequel to Everyone Wants to Have Sex With Twilight Sparkle

Twilight had been thinking about this for about a month; How best to exact her revenge against her disgustingly shameless best friends. The Valentine's Day discussion has been mostly forgotten, but Twilight Sparkle never forgets.

Dark tag for apparently inappropriate and disturbing mind-altering magic.

When CIA intelligence reveals Barry the Psychotic Cyborg, plans on ripping a hole open in space-time with stolen ODIN tech, the former ISIS gang are strongly encouraged to do something about it. Meanwhile, Equestrian intelligence assets are on the hunt for a notorious criminal mastermind. ISIS agents back on Earth must withstand the the terror of a horrifying creature from another dimension, while they try to save Archer from whatever horrors said dimension holds for him.

An Archer Crossover. Expect strong language, lewd humor, sexual themes (no explicit scenes), alcoholism, storm trooper accuracy, chaos, and violence (no excessive violence/gore), probably.

Cover art by me.

Twilight has survived many things in her young life; being an outcast, dealing with a terrible Principal, becoming a monster...

But now she must avoid a transfer named Gilda at all costs, in the name of saving her precious tooshie.

How will cope our favorite group of ponies, when they suddenly are trapped, not in a cage, but in their younger, smaller, and certainly cuter forms??, and what will do a certain trio af not-so-little fillies to avoid any harm while being in this form?,
Time to find out.

a HUGE thank you to TheARAuthor for editing this monster of story.
Edit: [24/09/14] Provisional Cover Art, I don't know if I must cheer for this, but still
YAY

After becoming a Princess, a new door was opened for Twilight Sparkle. More books to read and new spells to learn. Immediately going into deep study mode she found a spell to make one younger excited she quickly tried to use the spell but it ended up backfiring on her turning her into a foal.

Now with no way of turning back Twilight will have to be the widdlest Pwincess of Equestria until a solution can be found.

Featured: August 31, 2014 Thank you everyone.

Warning: Contains cuteness, Diapers and a little humor.

When Twilight finds a book some advanced spells she can't resist but read it and try to perform them. Unfortunately the spell back fired and turned Twilight back into a filly. Having no memory of her adult life, can her friends find a cure for her? Or will she have to start life over again?

Twilight asks Celestia for romantic advice.

You know, for a friend.

There is now a Spanish translation of this story, courtesy of Spaniard Kiwi

Twilight stalks and harasses a nine year old filly...but it's in the past, so it's totally legal.

Now with Reading by CaptainBron3y