The era of monsters is upon us! Giant dinosaur-like creatures roam the southern hemisphere wrecking absolute destruction upon every city in their path. Now mankind has designed their own giant protectors, but will they be enough to save mankind or is our time on Earth up? Three months have past since Gorghadra destroyed most of Chicago and left humanity's defender, Sky Sentinel, for scrap. Sky Sentinel has been rebuilt but his commander is gone, and the crew is not happy with the replacement: Major Jackson Chase, a pilot with a less-than-perfect military career. Tensions among the crew members escalate when Sky Sentinel is dispatched with an untested commander to defend New York City from an unearthly monster.