After a massive solar flare hits earth and destroys the power grid, electrical outages spread rapidly across the United States. In an effort to survive the chaos around them and save his family, Patrick Walker decides to bug out from their Mississippi Gulf Coast home to his grandfather's cabin in northern Arkansas. The quest for survival begins in their own neighborhood when their friends turn against them and try to take their supplies. After a gun battle, their journey to Arkansas is filled with life-threatening hazards as the situation rapidly goes from bad to worse. Without electricity, there is no access to any of life's basic necessities. As each day passes, their plight becomes one in which it is every man for himself, kill or be killed.