Sixteen-year-old Davis finds himself facing the grim reality of these horrific events as he and his younger brother, Tommy, narrowly escape a nuclear explosion that tears their world to shreds. On the run and seeking safety, a twist of fate joins the two with Davis' bully, Bobby, along with his younger sister, Rachel. Despite their differences, they must band together to survive.
Soon, the four lost souls become a makeshift family-the older caring for the younger, each doing their part to stay alive amidst the violence and danger of their post-apocalyptic world. Will they survive the tribulation, or fall prey to its terrible wrath?