The EMP series realistically depicts the life of a group of survivors living underground in the wake of an EMP and nuclear attack that destroys electronic devices and the electric power grids over much of the world. The story follows the life of a group of survivors sheltered inside the unused Yucca Mountain nuclear waste repository at Jackass Flats, Nevada. Book Three picks up the survival four years later where the survivors in the mountain have in Book Two for the past two years repelled attacks against them. The survivors split, most leaving their mountainous refuge to establish a post-war life in North Las Vegas. A small group remains at the mountain to defend it. A battle ensues at the Hoover Dam just ahead of global weather changes that deliver radioactive dust from an El Nino storm that forces the survivors to seek cover. Tragedy strikes with unimaginable consequences.