Mankind is expelled from Earth after losing the battle against the invaders called the Naytiba. To win back Earth, the player becomes Eve must fight through powerful enemies with new comrades.

Ravaged by strange, powerful creatures, Earth has been abandoned, and what is left of the decimated human race has fled to a Colony in outer space. After traveling from the Colony, 7th Airborne Squad member EVE arrives on the desolate remains of our planet with a clear-cut mission: to save humankind by reclaiming Earth from the Naytiba – the malevolent force that has devastated it.

But as EVE tackles the Naytiba one-by-one, piecing together the mysteries of the past in the ruins of human civilization, she realizes that her mission is far from straightforward. In fact, almost nothing is as it seems…