After an EMP obliterates the nation's electrical grid on New Year's Eve, it's not long before society unravels and panic ensues. As the lights go out and silence spreads over the city that never sleeps, four ordinary strangers - a bike messenger, a homeless person, a support rep, and an ex-convict - must forge a connection in order to stay alive. When they realize the danger is far greater than they expected, they must embark on a perilous journey out of the city.

With little warning, a solar super flare erupts from the sun. A billion tons of superheated plasma hurtles through space toward Earth. As multiple solar storms strike Earth, transformers explode, the power grid fails, and communication networks collapse. Half the world goes dark, thrusting the planet into utter chaos. With society crumbling around them, the survivors must fight not only for their lives, but for everything they hold dear - hope amid devastation, justice in the face of depravity, and ultimately, the perseverance of the human spirit against all odds.

Landon Gray, a skillful "ferry pilot" who delivers planes to customers has one final drop in Alabama before Christmas. But when an EMP causes the plane he’s in to crash on the remote, snow-covered mountains of North Carolina, he’s rescued by Beth "Bluebird" Sullivan, who claims to have lived off the grid since she was born. Beth brings him back to an isolated cabin to recover while waiting for her father to come back from the nearby town. When he doesn’t return, Beth grows increasingly worried while Landon struggles with being far from home.

Alex Reid, a member of the US Coast Guard, is on the brink of divorce. On the day his wife arrives on the east coast to have him sign papers, the nation's crippled by a string of increasingly bizarre disasters. When the internet, communication, and power grid goes down, and explosions erupt across America, they soon find themselves fighting to stay alive. Desperate to protect family, they're forced to venture across a chaotic and powerless country in search of their daughter. As the world ends and panic takes hold, they must overcome more challenges than a broken marriage to survive. 

As earthquakes are triggered, fault lines split, buildings crumble, and monstrous tsunamis rush inland, Jax, his daughter Zoe, and a group of civilians with vastly separate lives collide in the Northwest in an interweaving story of survival, loss, and redemption. Meanwhile, Natalie Reid is at the Gatlinburg Midnight Parade, charged with caring for teens from a group home; when the earth shakes, the sky lights up in a brilliant light, and planes fall from the sky.