During the coldest winter on record, an EMP attack wipes out the nation's power and cripples the country. As the city spirals into lawless chaos, an investigative journalist, twenty-six-year-old Cassandra Drews, is forced onto the dangerous streets of Portland to begin the long walk to her parents' home in Oregon. But hypothermia and starvation aren't the only dangers Cass and her rescue dog, Daisy, face on their perilous trek.

Half of the earth's population has been wiped out. Impossible to predict or stop, the Gamma Ray Burst tore through the Earth like a bullet, its radiation wave killing hundreds of millions, and the after effects ensuring the deaths of billions more.

Deadly radiation from a passing comet is about to destroy life on Earth. In desperation, the US government constructs a series of underground shelters to protect as many people as possible. They are expected to be underground for 20 years before returning back to the surface. But can they survive their time within the confines of the underground shelter? And what will they find when they finally emerge?

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.

A secret buried in the Antarctic. A puzzle unsolved for thousands of years. And a Brooklyn-born master gunnery sergeant who's royally pissed that he has to babysit the researchers sent to figure it all out. But when Patrick "Wic" Finnegan finally sees what the team has uncovered, he can't believe his eyes, nor is he prepared for the violence to come. Soon, the portal opens and unleashes a storm of unbridled fury upon humanity.