They called it conversion. The last desperate act to save an entire sapient species from the spread an effect none could have predicted, one that threatened to slowly, painfully wipe every human from the face of the earth.

It was flawed.

A Conversion Bureau reimagining.

Twilight isn't having a very good day. An experimental spell blew up in her face, an army of changelings is attacking Canterlot, and she just died. Yet somehow, it looks like it's going to keep going downhill from here.

Given the chance to correct what's gone wrong, Twilight swears she's going to fix all this even if it kills her. Which it will. Frequently.

Cover art by Pixel Prism
Spanish Translation
Series TV Tropes page

Twilight Sparkle's friends have lived long and happy lives. Now their time is coming to an end, but Rainbow Dash, at least, will not go gently. Twilight has the power to save her friend's life. Is it worth violating the natural order?

"The things that pull at your heart—the memorial in the prologue, the wedding in Chapter 1, the births and deaths and relationships to come—are not the point of the story: they are the stakes, and the story is at its heart about a decision that must be made."
—horizon

In a world where everypony's destiny is permanently emblazoned on their flank. Three young fillies seek the paths that belong to them. Little do they realize, the journey's destination is not always determined by the ones who walk it.

"Cutie Mark Crusaders Alicorns, Yay!" Follow the CMC as they adjust to new expectations and find new crusading opportunities.
Is there enough aspirin in Equestria for the denizens of Ponyville who have to deal with three ever-helpful alicorn fillies?

When Discord defeated the Alicorn sisters during the War of Chaos, he declared himself King of All Equestria, banishing Celestia to the Mirrorworld and turning Luna into a shadow. Now, 3000 years later, he rules with the help of his Royal Mage, Twilight Sparkle and Pinkie Pie, his Royal Jester. Together, the trio go on many strange adventures thorugh a world of chaos.

But Twilight holds a secret that could end Discord's rule.

Assuming she can stay sane long enough, that is.

Takes place before MIB III. Agents J and K have seen a lot of crazy stuff in their 13 years of partnership. But none of that even comes close to their next case....saving Equestria. When a maniacal extraterrestrial known as "Mad Max" travels to the world of ponies in order to fuse their dimension with ours, causing the destruction of both, the agents must team up with the Elements of Harmony to stop him. Even if it means making them temporary agents...

Humanity as a race has finally fallen and Earth has been purified. Equestria is now a stronger nation thanks for all it's new inhabitants, the newfoals, formerly humans before the purification of Earth.The celestial sisters rejoiced in their thrones, because they drove humanity to a new step of happines though the ponification and assimilation of all the humans into Equestria. Or so they thought.

Led by a mysterious stallion of indomitable will and resolution, far away of equestrian frontiers, a city stood defiant against Equestria itself as the last hope of humanity, maybe not humans anymore at the surface but at heart. With the last remnants of human knowledge inside the minds of the dwellers of this thriving city, will they be able to recover their identities and freedom? Or they are going to succumb against the problems of forming a independant state from Equestria?

A/N: This is my first shot at something as complex as The Conversion Bureau universe. I'll take mainly the original premise of this universe plus some adds from here and there, so you can look at it as a personal view about it.
Don't expect frequent updates on this, since I want to think each chapter. Anyway if this little thingy manages to be liked I can think about be more swift with the chapters, but I'm a very inconstant and tend to take far too time to write.
By the way, I hope you like this story!

Special and big thanks to Jack Kellar for spotting errors and edit the story thus far to make it more readable. (Damn my lack of english vocabulary)

PD: Cover made with a screenshot from the game Anno 2070 (All rights reserved to their respective owners)

Editor: Jack Kellar

This story is a sequel to Princess Celestia The Changeling Queen: Stories Behind the Mask

At the Royal Wedding, Chrysalis and the Changelings were revealed to all of Equestria.

But another mask was torn away that day. A mask born for a thousand years. A mask created on one promise. A mask, that has become synonymous, fused, to its bearer.

A mask that when ripped off, causes Twilight, her friends and Luna to question everything they ever knew about the one pony, one very important pony.

At the Royal Wedding, the meaning of the phrase 'Princess Celestia' changes forever.

NOTE: Chrysalis is NOT Celestia!!! That'd be impossible to pull off.

Credits to: Plainoasis for the design of the cover art
Note 2: Original cover art here: https://angelea-phoenix.deviantart.com/art/Contest-entry-Changeling-Celestia-337023552

Pre-read/edited by Zervziel,
Blankscape,
FinalFan,
Courage Fire
Aurora Borealis

Side Stories to this can be found: here.

An audio-reading on youtube up to Chapter 21 is up by StraightToThePoint Studios. I'm aware there are others but this is the nearest complete one: [embed]https://youtu.be/X3eMW673CSY[/embed]

There are also 2 print versions of Princess Celestia:The Changeling Queen. Nonexistent Publications run and Ministry of Image's run.

Contribute to the TV Tropes Page (thanks to Babs_Seed72 for getting it up)

An alternate universe story, in which Twilight Sparkle was born a pegasus, not a unicorn. Because of this, she isn't Princess Celestia's personal student at the School for Gifted Unicorns, and she can't wield the Element of Magic. Can she still help save the world from Nightmare Moon? Or will she fall under the dark powers of nightmares?

This was somewhat inspired by Rainbooms and Royalty, a story in which Princess Celestia picks Rainbow Dash to be her personal student.