An EMP attack takes out the power grid, putting 200 miles and a dangerous crew of hired assassins between former police detective Sam Wallace and his family.

Clint Redshaw walks into a port facility meeting expecting an ordinary day arguing about the budget. When the shaking starts, he keeps calm. But as the tremors stretch on and on, the ground rips apart, the dock disintegrates, and chunks of land fall into the Strait. When the quake finally ends, there's only one thing on his mind: his daughter. Mika's singing songs and laughing with a gaggle of other sixteen-year-olds as they climb into the Pacific Northwest mountains for a scout weekend. One minute, it's sunshine and good vibes, and the next, it's screaming and chaos.

Even before becoming a husband and father, safety had been Shane McDonald’s priority for most of his 45 years. As a nuclear engineer, it’s his responsibility to keep the Sequoyah Nuclear Plant functioning at optimum levels to avoid what protesters fear most: a meltdown. But when a coronal mass ejection from the sun wipes out power across the globe, stopping a nuclear chain reaction is no longer his primary concern.

Laurel was working in the ER, stabilizing a patient, when the unthinkable happened. An EMP hit. The power went out. And it never came back. In the devastating aftermath, she must turn South Minneha Hospital into a place of refuge, a beacon of hope for her fellow survivors. But a beacon attracts predators, too… Predators like Arlo Staaf, the brutal leader of a ruthless gang. Desperate to save his dying son, Arlo takes over the hospital and gives Laurel an impossible ultimatum: save his terminally ill boy, or watch everyone she cares for die.

When the helicopter goes down after dropping them off, they realize they’re in trouble. The platform loses power. Cell phones don’t work. Everything electronic is dead. There are whispers of an EMP attack. Now that they’re stranded with a skeleton crew on a steel platform miles from shore, battered by massive waves, the deadly truth of their predicament slowly sinks in.