EMP strike over the United States, which disables almost all electronic devices. Basic things such as newer vehicles, electricity, running water, land lines and cell phones suddenly no longer work. The story focuses on a small town in rural North Carolina and its struggles to survive. Food and medicine shortages, coupled with unsanitary conditions and roving gangs of marauders plague the town's inhabitants.
Once you get past the sometimes poor grammar, run-on sentences, and consistent use of "should of" instead of "should have" (the editor should be shot!), the story is actually quite engaging. I actually cried a few times when things went wrong for the protagonist, and found myself praying that I'd never be put in a position where I had to sacrifice my pets for my family's survival, or defend myself against my neighbors.
The novel definitely makes you think. No one can know for certain because it (thankfully) hasn't happened, but it's probably a very good representation of how things would go down if an EMP strike did occur. What makes it even scarier is the knowledge that Iran and/or North Korea may have created a bomb capable of producing an EMP large enough to implement this scenario. And they don't especially like us.