Darkness is a living thing. It consumes the strong and destroys the weak, not knowing the meaning of mercy. It corrupts and devours until there is no light left within one's heart.

What happens when the young mare who wields the Element of Magic succumbs to the Darkness?

After feeling unwanted and abandoned during the Canterlot Wedding, Twilight leaves to try and make a new start for her only to fall prey to a gang. Now Twilight tries to rebuild a life with no memories of her past until circumstances guide her home.

Even after losing her memory, circumstances guide Twilight home to Ponyville.

(This is NOT a romantic pairing between Twilight and Trixie)