Welcome to Nu Earth, the war-torn planet on the very edge of the galaxy. The planet is so ravaged by chemical warfare that no one can breathe its atmosphere or swim in its seas. No one but you, that is. You are Rogue Trooper, the fighting legend of Nu Earth, genetically engineered to live and breathe in the poisonous chem-clouds of the planet.
You are the sole survivor of the Quartz massacre, when the entire regiment of Genetic infantrymen was betrayed to the Norts and destroyed by their crack Sun Legion. Your only companions are three of your GI buddies, their personalities stored at the moment of their deaths as bio-chips, now mounted on your gun, backpack and helmet.