IT IS A DARK AGE FOR THE EARTH FEDERATION . . .
Our home planet is under attack and our colonies are raided unmercifully. Space travel has become a death wish as more and more enemy ships find their way past the outer defenses and into the paths of friendly trade. Supplies must go through, however, and as the pilot of the Federation fighter THRESHOLD it is your mission to clear the tradeways of the pirating fleets so that supplies may get to the defense bases that protect our world and its colonies from the lawless invaders that roam the galaxy.