The planet Earth has been infiltrated by beings hailing from a different realm! Traditional Earth weaponry is rendered useless against these extraterrestrial "Neighbors"; however, some scientific minds have toiled to develop fresh armaments derived from the enemy's technology. With these weapons in hand, humanity is waging a taxing battle to fend off the unwelcome visitors. The commander of the primary Earth base has dispatched one of their top soldiers, Yuuichi Jin, to assist the floundering Base 7 and save his own son, Yuiga Tadashi, who commands the base. Distressingly, it appears that Yuiga Tadashi is the root cause of Base 7's turmoil. He is an inept leader fixated solely on preserving his personal reputation; worse yet, he believes that his status as the base commander's son affords him limitless authority. Can Jin remedy this precarious predicament?
