After their successful acquisition of the Resources obtained at the Battle of Ruthria, the Machina—under the command of the High Queen Eos—built a completely new factory to process them.

In this factory a number of new and much more advanced weapons are being produced, including the newest series of combat vehicles known as Exosuits. As soon as they are ready to launch it's doubtful that the Machina will face easy defeats as the ones in their recent history.

Having received such news, the other factions took whatever action they could to stop the High Queen's plans.

The Angels built a fortress from which they can deploy their forces to face the Machina in their own territory. The Demons on the other hand, used their skill to influence and corrupt the Machina's own forces, building an army out of KC-00032's workforce.

Such a betrayal cannot be tolerated by those who follow the will of their High Queen. As such, any who oppose the defending forces, Angels, Demons, or even Machina themselves, will be considered hostile targets by the Machina forces.

Simply put, this is a battle of elimination, the last force remaining on the battlefield shall be the ones claiming the victory.

— Given the fact that this battle shall take place in a metallurgic plant, there's a number of environmental hazards that can be used to one's advantage in battle. Pits of molten metal, compactors, grinders, acidic baths, laser cutters, high voltage cables, and much more.

— At any moment in the battle, characters from the Demon and Angel factions can call upon support from minor NPC forces. The Angel's army is specialized in healing and protection, except for their Valkyrie forces which tend to give an oomph to their attack power. The Demons are comprised of corrupted Machina that are better used in guerrilla tactics or as disposable "meat shields". The heaviest construction machines are useful for defensive purposes, though.

— The Machina count with the support of KC-00032 itself. The factory's arsenal of experimental weapons can give an edge to the Machina as long as they can keep control over it. Among the weapons there's a set of three functional prototype Exosuits, stored in the facility. These suits known as (α, β and γ) can be combined (as long as they remain operational), forming three different configurations: Form I (ranged attack power), Form II (melee attack power) and Form III (defense). Such a machine has power to face to face even the mightiest of the Heavens' or Hell's forces.