Trixie's life is changed forever when she discovers the abandoned war helm of Nightmare moon. It contained Nightmare Moon's personality and a fragment of her mind, which get's donwloaded into Trixie's head when she puts the helm on.

Now Trixie has to share her head with the dark alicorn, who is using her to complete a quest that was started over a thousand years ago. To what end? Trixie doesn't know, and Nightmare Moon is far from forthcoming with the truth. So now she has to decipher cryptic memories to find out the truth.

She discovers that Nightmare Moon, though cold and calculating, is not as evil as everyone thought her to be.

A/N: Normal disclaimer, ponies belong to hasbro. Any simliarities between this story and one that come before it is coincidental.