A war between an ancient civilization and the creatures of the Void, which resulted in the eradication of the civilization and the suppression of the creatures.
But now centuries later the void is threatening to rise once more.
Hundreds of years after civilization as we know it has collapsed after a wave of natural disasters, and the United States is ousted by the hierarchical, elitist Ascendancy, a young woman fights for survival in what was once the American Southwest. But Maisie finds herself over her head when she's brought to the heart of the Ascendancy for a mysterious set of experiments. But one thing's for certain: she won't go down without a fight.