Ancient peoples enlighten contemporary humankind in a mystery as old as time. Rachel Blackstone is recruited by the spirit world to prevent a cataclysm: the end of the Fourth World of the Hopi. As earthquakes rumble and a supervolcano threatens to blow, it becomes imperative she discover the root of all evil. Can she stop the greedy men intent on plundering Mother Earth and killing those who would stop them? The survival of an unaware civilization depends on Rachel getting it right.