Equestria was at war, the land was scarred as the Sun battled the Moon for dominance over all the beings that resided in it's borders, and one little pony struggled through the night, his life nothing but a blink in time for Twilight Sparkle, protégé of Celestia, Element of Harmony, heroine of the realm, friend and adoptive sister of the redeemed Princess Luna...

And a disaster waiting to happen, as Twilight Sparkle delves into her studies on dream magic, she connects with the mind of another unicorn from over a thousand years ago: at the height of the tyranny of Nightmare Moon. But does she influence him, or does he control her?

As events spiral out of her control, fate will be questioned, friendships neglected, and bonds of trust will be the least to be broken, for when our intellectual unicorn meddles in the past, what happened, may happen any other way, or more than one way at once, and will she ever notice the difference?

What is a Lesson in Friendship when all this, and more; when any mistake, no matter how slight, may end your own existence?

This is not related to the book/movie "50 Shades of Grey" at all.