The peaceful inhabitants of Farmel discovered a nightmarish truth upon venturing into space: colossal organic entities known as Air Fortresses were advancing toward their homeworld, devouring everything in their wake like a ravenous swarm. When the planet's military forces proved no match for these cosmic destroyers, the Space Federation made a desperate decision to deploy Hal Bailman, a lone soldier equipped with advanced armor, weaponry, and a compact vessel, to penetrate the Fortresses' defenses and dismantle them from within. Humanity's survival now rests on this single operative's ability to navigate the alien structures and neutralize the threat before the Fortresses strip their world bare.