A volcanic eruption on the other side of the globe is the beginning of the end of the world. Oblivious to the changes were Ron Ash and his small Texas town. Then a dam brakes and washes away nearly everything and everyone they knew, including Ron’s wife.

Before the lights went out, Jack Warrant never considered himself a prepper. That was someone on the edge, a conspiracy theorist or a doomsday cultist who had a fatalistic view of the world. He was neither a theorist nor a cultist. He was an optimist. At least that was what he told himself when the darker thoughts creeped into his psyche as he stared at the ceiling in the middle of the night. Whenever he started down the rabbit hole, he always clawed his way back into the sunlight.

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.

Young parents Ethan and Brooke Spencer are on a romantic ski vacation in the Rockies when the lights go out, cars stall, and communications fail. Stranded 800 miles from home, they are desperate to return to their four-year-old twins and are willing to do whatever it takes to reach them.

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.