Gillam and Tunuhun, having narrowly escaped from the alien hive with an ancient artifact, are now on the run from a covert government agency sent to investigate. With the help of Gillam's aunt, they find themselves seeking the assistance of his uncle's former associate, an expert in the occult arts and by all accounts a verifiable madman.
But the area on the border of Arizona where he lives has a sordid past, one that has caused his small town to degrade so badly it can no longer be found on any map. Using clues left in his uncle's journal, Gillam and Tunuhun travel to this sinister location in hopes of recruiting the one man who can help translate the map tile fragment and assist them in stopping the pending invasion.
Yet there are forces gathering below this benighted region, led by a presence more diabolically evil then anything they've ever encountered. Pulled into the mysterious events unfolding under the unnamed town, now Gillam and his companions must fight to stay alive while attempting to outwit a being of superior power and intellect.
Will they overcome the terrors buried beneath this long-lost location without succumbing to the machinations of its subterranean overlord? Or will they be drawn inexorably toward a fate spelled out long before they were even born, becoming unwilling servants of a master planning the inevitable destruction of our entire world?