Zardon's interstellar armada has been detected approaching Earth. You need to maintain the industrial capacity by transporting mutants to the factory site before Zardon's mutant convertor kidnaps them to complete the mutation. Your mission is to transport mutants to the factory in your operating area, protecting them from the Zardon invaders. Your combat patrols are vital, defending the Earth's industrial base, ready for the day when we can finally eject these ruthless enemies from the solar System.