John Hill and Marvino Buck sit in a prison cell, watching the world fall apart on the news. Janay Williamson, a guard at the Cook County Jail, finds herself surrounded by violent men when civilization begins to crumble. Henry Haynes is a doctor in the middle of his shift when he notices the hospital is eerily silent. None of them knew the world would end that day. Now that it has, they all will have to fight to stay alive. With the world collapsing all around them, death seems imminent. Surviving quickly becomes all that there is. The only thing separating life from death is who wants it more. Who has the strongest will to survive? All seems lost at the beginning of the end . . .