In the dawn of a new Ice Age, families everywhere are taking to the road to escape the frigid landscape--but you can't outrun the cold. Nathan and his family are on the run from a catastrophic polar shift--but the bitter cold is the least of their worries. Nathan was led to believe Detroit would be the Promised Land, but when his family arrives they find a city struggling just to survive frigid conditions. Nathan's old friend Stryker has made a safe haven in the ancient Masonic Building, but it soon becomes clear the comfortable life within his walls is unsustainable. Resources are running out fast, and with a new baby to feed and a son in need of medicine, Nathan and Cyndi face a difficult choice: dig in with the dangerously naïve Stryker or head west to Wyoming with their friends Donie and Dave.