Since the destruction of Iron Fist corporation, the United Republic has been under constant attack by Penta. Penta, once a rival corporation of Iron Fist, has taken control of the cities and wastelands using military force in an effort to establish a worldwide military dictatorship. Intelligence reports state that Penta has recovered top secret documents amid the rubble of the once mighty Iron Fist corporation. The corporation plans to create a fleet of Iron Soldiers and maintain control by cursing the rebellion. Your mission as a soldier of the United Republic is to minimize Penta Forces and protect the populace as you pilot the Iron Soldier in a one man war against Penta! The fate of the world rests on your shoulders...