The Japanese Self-Defense Force had to be on guard, for the Symbiotic Legions and their gargantuan queen were quickly approaching Tokyo. The city of Sendai was completely annihilated by these space invaders, and a disaster of that magnitude could not be allowed to spread elsewhere. The SDF sent spy helicopters, called the UH-1J Iroquois, to pursue these dreaded creatures. The craft were able to detect the Legion and calculate a projected path. They were heading for Mount Akayuka. A strategy would have to be concocted, lest the world fall to ruin under the oppression of these beasts from another realm...