"What do you wanna be? The Princess, everyone adores? Or the monster, that you are supposed to be?"

Nightmare Moon. For Luna this name fills her with shame, regret and hate. After the Mane Six purified her from her worst nightmare, the true suffer begins. Luna's guilt plagues her together with the question, if the ponies will ever see her as the Princess and not as the monster, she had been in her past.
When Ponyville is inflected by a rare and strange disease, Celestia has to clear the air. She too has comitted a sin in her past and now her mistake threatens the life of so many ponies, even children. Celestia asks Luna to find the Elements of Disharmony, which has been lost decades ago. But sadly someone else is after them as well.
Can Luna find the stones? Or will her enemy be faster? And during her search, will Luna ever be able to see beyond her past and face her greatest fear? Will she return as the Princess, everypony adores, or as the monster, everyone has seen in her?

AN: This story will have a sequel. It was inspired by the fanfiction Past Sins by PenStroke, the movie Balto and my own Headcanons. All characters belong to Hasbro and Lauren Faust. The OCs Brightwisker, Dead River, Cobaltwave, Sharp Sword, Amentia, Deimos and Phobos belong to the author.
The story is on hitatus, because at the moment I am not really in the mood for continuing it. Probably also because so less people read it.
The coverimage is from InuhoshitoDarkpen.

On a dark and stormy night, centuries in the past, Celestia and Luna walked into a bar.

They came looking for knowledge. They found a little more than that.

Written for Round 1 of the Four hooves and a pen writing group. Cover art from the gallery of Lopoddity.

How much can change in a hundred years? How much can change in a thousand? The day of the Nightmare’s defeat Princess Luna finds herself adrift, a thousand years away from the world she knew. With her home in ruins and Equestria changed beyond all recognition, is there anything left for her when even apples are strange?

Winner of August's Write-off! - Distant Shores

With thanks to JCatt and Lord of Dorkness for their help pre-reading.

First contact. Not just with a new world, but with a world in a whole new universe. Initial negotiations go well, so Princess Celestia makes a visit to this 'Earth' to cement peaceful relations. Unfortunately, even when you are as experienced as the goddess of the sun, it's the little things that can trip you up.

Preread and edited by Noe Carrier. SPOILERS IN COMMENTS!
Russian translation: Все это скоро закончится, принцесса by Smikey

Princess Celestia as been challanged to a showdown by her former student, now princess, Twilight Sparkle.

Army's have risen, plans set in motion. In the end it will all come down to which princess is the better strategist with the fate of Equestria hanging in the balance.

Now with a Dramatic Reading.

Being the Royal Advisor for Celestia and Luna, you've come up with solutions for many of the nation's problems.

Unfortunately you said a naughty word in front of a guard. Seeing as how these ponies are extremely sensitive, you lie your way out of it.

The events that follow could only be described as "completely stupid".

Rated Teen for naughty words being said.

Thanks to Zephyr for editing.

Featured within 1 hour and 30 minutes on Aug 12, 2015. Thank you guys so much!

Good thing I was reading this on the toilet, because this story made me lose my shit. -LeoneHaxor

Just because the two sisters have led Equestria through thousands of years of peace doesn't mean there aren't those who think they can do better.

With a powerful artifact on their side, a group of rebels has sealed Celestia in her palace and stripped her of the majority of her powers. As the last of her guards fall, she hears the pounding on the throne room doors and knows the end is coming soon...

**Featured on the front page on 8/12/15; both surprising and flattering seeing as how this is the first thing of substantial length I've posted here. Thanks all!

**Now with a dramatic reading!

During one summer day, Celestia is asked to watch after her sister, while their mother is gone for certain duties. Celestia thinks, this task won't be diffcult at all, but she is completeley wrong. Especially because she loses her sister within the first few hours.
Luna is walking into the Everfree Forest and bumps into a dark mare. This mare, Nightmare Moon, is searching for a host and she definitley had not looked for a cub. But because filly Luna does not want to leave her alone, "Moonie" has to play babysitter within the Everfree Forest.

Celestia is trapped on Earth.
Not as a human. Not as an alicorn. She's a common horse, an Arabian mare, without her magic, voice, knowledge of the language - not even freedom, forced to work at a riding school.

What can a single Arabian mare do to get back to Equestria from this backwater European country? With only the mind of a princess and a pencil in her teeth, Celestia must find a way home.

[Illustrated] [Alternate Earth] (without Bronies)
Rated Teen for language and some scarce suggestive themes.
Proofreading by AlicornPriest

Polish language version

Luna has now become her own mare

Cadence has become a beautiful princess in her own right

Twilight has grown up and graduated.

Celestia now begins to wonder about her own life and if she is still needed to be there for the younger generation and if they still need her to guide them.