Discord, the spirit of Chaos was given redemption by Princess Celestia when discovering the magic of friendship. However, his true nature gets the better of him, and once again he uses his power for his own will. The elements of Harmony are protected from him, but there was nothing saying that the element bearers couldn't be eliminated.

Realizing that Discord has no intention of stopping and has rendered the elements useless, Celestia and Luna must face Discord in a final showdown. His powers are too great for them to fight when they are in their current form, but perhaps two alicorns are not needed. Maybe only one.

Inspired by the artwork by dreatos

A mirror between worlds shattered. A girl driven mad by power ripping holes between worlds. A spiteful mare traveling through time to get revenge. When the fabric of reality surrounding Equestria starts to come unraveled, it falls to Twilight to find a way to fix things.

Good thing she has a familiar face to help her. Several of that face, actually. An alicorn princess (canon Equestria), a human mechanical genius (Equestria Girls), a brilliant but irritable slacker of a unicorn (Reflections), a stallion no less intelligent or magically gifted than the rest (genderbent Equestria), and even a unicorn obsessed with Dark Magic, working together to save all of their worlds, by returning Harmony to the world they find themselves in.

A world where Nightmare Moon rules Equestria after sealing Celestia in the Moon, only to go to war with the Crystal Empire, against King Sombra and his Umbrum army. A world where Discord wrought havoc, until his powers were stolen by Lord Tirek, who rampages across both sides of the war indiscriminately. A world where even the ponies far from the fighting must constantly fear Changeling attacks. A world where Harmony is nothing but an empty dream.

A world where Twilight Sparkle never existed.

What could possibly go wrong?

Contains spoilers for the cartoon, comics, and movies.