When an EMP plunges the United States into darkness, Mark Caldwell must lead his wife, Sarah, out of a collapsing city where lawlessness reigns, but their daughter, Hope, is missing, and finding her becomes his first priority.

With no power, no communication, and danger at every turn, survival becomes a desperate struggle against both ruthless survivors and the chaos of a society unraveling. Their only hope lies in a cryptic promise from Mark's estranged brother, Jimmy, a prepper with a hidden, off-the-grid homestead.