Doctor Anna Hastings is no stranger to disasters, having spent much of her career as an aid worker in conflict zones around the world. Yet when an electrical phenomenon known as an EMP brings down the power grid, Anna faces catastrophe on a scale she never imagined. She must learn what it means to be a doctor in a world deprived of almost all technology.

When Amanda Thomlin finds herself face-to-face with the reality that she may never see her mother again, the overwhelming uncertainty nearly immobilizes her. A kind father figure steps up and takes her under his protection, bringing her into his family.

A cataclysmic event shakes the world, leaving a father divided from his family. Survival becomes the ultimate battle, and he must fight with every ounce of strength to reunite with his loved ones. Nick navigates the chaos of New York City after a cataclysmic world event, facing humankind's darkest hour. Christine "Chris" grapples with keeping a family safe on a horse farm in Louisville, Kentucky. Searching for her calling and a sense of self-worth, Gabby gets in way over her head, forced to discover what she's truly made of.

Dan Slaughter has given up on appearances. With his wife dead and his kids grown, he’s slowly reverting back to the east Tennessee boy he used to be three decades earlier. He quit cutting his hair and started smoking pot. He drinks when he wants to and sings along with the classic songs of his lost youth.

Darrell Donnelly and his daughter Laykin embark on their yearly hiking trip to a scenic and remote part of the Ocala National Forest. What started as a long weekend turned into a fight for survival as the hikers attempt to return home in the face of civil unrest and lawlessness, the aftermath of a coordinated attack on the power grid and most electronic devices.