When an EMP strike plunges the nation into darkness, John Castillo and his wife Tamin, who dedicated their life to disaster preparedness, face their most dangerous crisis. Stranded at their homestead in the hills, they must navigate the treacherous aftermath of the disaster while contending with the chilling realization that trust is the rarest and most valuable currency in this new world. As they confront unexpected threats lurking within their sanctuary, John and Tasha will be pushed to their limits, grappling with the grim reality that only one may survive this harrowing ordeal.