Displaced story. Don't like, don't read.

Equestria is a dark a dreary place. A thousand year war has taken a turn for the worse as Princess Luna and her Lunar Republic fight a grim battle against the forces of her corrupted sister, Queen Solar Flare. Just as all hope seems lost four humans, those thrust from their own dimension into their with powers not their own, provide a glimmer of hope. But that threatens Equestria is powerful, and originates from beyond even their own world...

Collaboration between a few authors. FrostTheWolf, shinigamisparda, and Shagohad12 to name a few. Credit for original goes to Chaos Nightmare, who unfortunately dropped from the project.