This story is a sequel to That One Time: Celestia and Luna Married the Mane Six

Celestia and Luna married the mane six, now they have a harem and a honeymoon to deal with. In all honesty, happily ever after isn't all it's cracked up to be. At least there'll be room for orgies.

A Big Thanks to ArcaneDust for proof reading.

A thousand years ago, Princess Celestia banished her sister to the moon, that much we know. What wasn’t known, and what Celestia kept secret was that before her banishment, Luna had given birth to a foal. Now a thousand years later, as Nightmare returns to Equestria to bring about Eternal Night.

Twilight Sparkle, protege of Princess Celestia, struggles against the tyranny of this ancient foe. But how will she be able to save herself and her friends when the truth of this ancient legend crashes down upon her? Twilight will have to confront herself...and her heritage.

Polaris501

Once a Princess, now a Lord, Ember sends a letter to Princess Twilight to a situation that involves Spike. The letter seems serious and the dragons are already on their way. What could it entail about Ember's journey to Equestria? What does it mean for Spike?

Update: A NSFW version... has appeared! Those whom wish to explore the... freaky side, follow the link! Dragon Tails
Featured 4/17/2016!

The Follow up sequel called The Dragon Lord's Legacy can be found here! here

SPOILERS IN DESCRIPTION!!!!!!

Twilight was close, so close to getting the spell right... Why did this have to happen again.... -Celestia

Celestia was sure Twilight would be the one to solve it. She was so promising and so bright. It turns out Twilight didn't get the spell right. The outcome was not what Twilight was expecting. But will she ever figure out that it went wrong or will she forever live the lie Celestia wove to protect her? If she does will she find a way back? And if she does can it ever be the same...

EVEN MORE SPOILERS BELOW!
Inspired by
Oh What A Beautiful Mourning

This is also my first fanfic so please point out any errors you notice.