The year is 2087, and the Solar System is engulfed in the flames of war. Claiming that their goal is to bring about a "rebirth" of Earth's humans, the United Lunar Empire Giganos seeks to establish a new order in the Solar System by waging war on the Earth Federation Military. Their superior organization and technology has given them a huge advantage over the nations of the Earth, to the point where they have gained control of 70% of the Earth's surface. Three military students of the Space Station Alucard learn of the Imperial Army's (ULEGiganos) shooting of a refugee ship outside their cargo holds. They go to investigate, and find a secret special Mecha armor that they commandeer. They then, against all odds, defeat the first raid on the Space Station Alucard. This does not, however, prevent it's total destruction by an asteroid launched by the insidious ULEGiganos military.