In the year 2049 at the peak of the Second Cold War, an all-out conflict between N.A.T.O and the Russia-China alliance is about to break out. In the midst of the tension, an enigmatic incident sends the world into an apocalyptic war. Nightmarish creatures of unknown origin suddenly begin to appear, plunging the world into terror and chaos. A young American pilot, Ethan, is caught in the middle of it all, as untold horrors break out on the surface of the planet. He will have to battle endless hordes of monsters in his Mobile Armor, a powerful customizable Mech.