The Metro tunnels of Stalliongrad shelter the last remnants of ponykind from the ravages of the Apocalypse. Beneath the earth, ponies struggle to survive against mutants, radiation, and each other. But when an unstoppable threat emerges from the darkness of the Metro, one pony must brave the shadows to save not just his home, but the very existence of his people.

Every rising star must eventually fall. Rainbow Dash is locked in a struggle against her own past, and with the help of Twilight is about to make a discovery that will change the way she flies forever. But what will she lose in the process?

Massive thanks to Furor1 and Nyuuchandiannepie for the ridiculously awesome artwork, you should really check them out on DeviantArt if you've not already.

Dedicated to Donald Campbell and his Bluebird, for chasing his horizons for no other reason than the fact that they were there. Also to Steve Hogarth and Marillion for writing Out Of This World, the song that inspired this story.