The Federation’s worst fears are confirmed when a gravitational disturbance heralds the arrival of the alien Aerogater menace. Secure inside their massive fortress, the Aerogaters dispatch scores of mechanized Megiloat weaponry and begin kidnapping certain members of the Earth military. But the Federation will have little time to ponder their enemy’s intentions: Adler Koch has seized the opportunity caused by the Aerogater’s arrival for his last great gamble – an all-out attack on the Earth Federation Government!