25 years before the return of Nightmare Moon, the Hoofington Mana Power Plant suffered a total meltdown, releasing Balefire energy into the atmosphere, forcing many underground, or into shielded colonies.

The present day, most of the world is gone. Bloodthirsty abominations and radioactive storms batter the over world, now known as The Zone. Princess Twilight Sparkle alongside the other three Alicorns created a now feared group know as G.A.L.L.O.P.E.R.S, elite soldiers trained specifically to fight off the creatures that roam The Metros and The Zone. Artyom, a well-worn scavenger and newly recruited G.A.L.L.O.P.E.R, must join up with Twilight and her friends, to locate a rouge G.A.L.L.O.P.E.R named Knight Blade, who has joined up with The Crimson Order, a fanatical militaristic organization who wish purify the Zone and Metro, killing any "mutants", and rebuild the world through in their image.

(Tri crossover between MLP, Metro 2033/Last Light, and S.T.A.L.K.E.R) (Comments appreciated!)