When ex-Wall Street executive Peter Salem, out of prison, heads to the small town of Bunker Hill, Kansas, where his ex-wife and children have started a new life. Shortly after he arrives in town, he loses all power: there is no electricity, and cars and computers suddenly shut down. Community leaders do not know how to explain. Is it the rapture? A massive terrorist attack? aliens? Cut off from the world, the town's militant past is reawakened and forces unite to protect the citizens from an invisible enemy, represented to some by Mr. Farook, an elderly Pakistani immigrant who owns the local shop. The city's fear leads to the creation of a group of armed men, resulting in torture, illegal searches, and eventually murder.