Once upon a time, humanity could no longer contain the rage that swelled within, and the world ended in a wave of fire. One hundred years later, in the wasteland formerly known as America, a broken man who goes only by the name of Cavalo survives. Purposefully cutting himself off from what remains of civilization, Cavalo resides in the crumbling ruins of the North Idaho Correctional Institution. A mutt called Bad Dog and a robot on the verge of insanity...