Nightmare Moon won. She defeated Celestia, broke the Elements, banished the sun. This all happened a very long time ago. So long ago, that she has had plenty of time to change her mind.

Of course, fixing our mistakes is never so simple, and never without consequences. Even with particularly potent help.

"If you came to conquer, you'll be king for a day. / But you too will deteriorate and quickly fade away."
— "No Control" by Bad Religion

A big thanks to Craine, Sorren, and Idylia for prereading and editing. If you enjoyed the story, don't forget to check out their pages.

Equestria Daily
Royal Canterlot Library (FIMfic version)
Russian translation by Doof
Chinese translation by Dreams Set Free

Kitsune Heart has done a dramatic reading of this story! Find it over here.
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Comments contain spoilers.

Starlight Glimmer wakes up to a town filled with nonsense-speaking ponies. She has to get to the bottom of everypony's sudden bizarre, colorful aphasia.

I have no regrets!

Wastelands. Dystopias. Playgrounds for megalomaniacal villains. Each time Starlight forced her into a new world, it was just another variation of Tartarus that she was glad to leave behind and forget about. Unfortunately, thanks to over thirty timeline jumps, Starswirl's spell has gotten worn and frayed, forcing her to stop in this latest world to repair it. Fortunately, things seem relatively peaceful. Unfortunately, Twilight soon finds out the reason for that peace is...complicated.

Finally pardoned after ages spent languishing in the Canterlot dungeons (though in fine company, to be fair), Futa Chrysalis enjoys a pleasant day out with Twilight Sparkle.

But the little unicorn has something planned, and she won't say what it is...

Failing once in her attempt to take Canterlot and failing again in her attempt to take down Twilight, one would think Chrysalis would have cut her losses and let things be, but the queen has once again appeared, this time in broad daylight with no disguise and no army. Her weapon of choice? Diplomacy.

Now Twilight is having to deal with the changeling queen, but surely putting up with her antics will be worth the knowledge she's willing to provide about her mysterious race and the potential undiscovered agents still within their midst...right?

Takes place before Magical Mystery Cure and diverges from there.

With thanks to MisterGunpowder for proofreading and editing.

Revision History:

05/09/2015: Chapter 1 updated with millions of little corrections.
05/20/2015: Chapter 2 revised and edited with another million small and large corrections.
06/12/2015: Chapter 3 given a thorough editing and revision.
06/23/2015: Chapter 4 taken to the gutter and edited twice to be sure.
07/14/2015: Chapter 5 thoroughly brutalized with the editing stick.
08/03/2016: Chapter 6 finally edited. Yes, I'm still alive, dammit.
09/29/2016: Chapter 7 fell out of the editing tree and hit every editing branch on the way down.
10/26/2016: Chapter 8 has emerged from the editing emergency room.
11/17/2016: Chapter 9 found and edited. No casualties reported.
11/30/2016: Chapter 10 treated for whiplash after lightning fast editing.
12/22/2016: Chapter 11 edited. Chrysalis shot first.
01/17/2017: Epilogue edited. Time to hit the cider.