No one is safe. Not before. Not now. Not ever.Jedidiah Martin knows this more than most. A survivor of the A.I. apocalypse that destroyed America, and former sergeant with the Texan Mech Corps, his mission is to keep the good people of Potterville safe. He was there when they destroyed Isaac, the superintelligence responsible for the end of humanity's reign on Earth. But is Isaac dead for good?From the ashes, a new threat has emerged. First, communication is down with the neighboring settlement of New Parker. Then a contingent from Potterville loses contact after reaching New Parker. Jedidiah's nephew Blake is among those missing. That old feeling grabs Jedidiah by the throat: something's wrong.With his band of mechanized warriors, Jedidiah sets out to find his nephew. He has a bad feeling, and that feeling is about to come true. Isaac is back, and he has Blake and the others hostage. That's not all. Isaac has evolved, and he's ready to finish what he started and end humanity once and for all. Jedidiah won't let that happen. He has a message for Isaac: I'm taking my nephew back, and then I'm coming for you.