When otherworldly beings known as 'Neighbors' invade Earth, humanity is defenseless against them until scientists develop advanced weaponry inspired by the enemy's technology. Amidst the chaos, ace soldier Yuuichi Jin is dispatched by the central base commander to assist the struggling Base 7 and rescue the commander's son, Yuiga Tadashi, who leads the base. However, the root of Base 7's issues lies with Yuiga himself, a self-absorbed leader who abuses his position as the commander's son. Can Jin turn the tide and set things right in this dire predicament?