A waterborne disease has sprung up in every corner of the globe, decimating the human race. Seventeen-year-old Eli McShane and his friends flee the chaos and violence in Phoenix and journey north toward the rumored location of a safe water source. They add several to their number, including a mysterious girl named Hannah, who, unknown to Eli, is being hunted by a dangerous man. Desperation brings out the worst in many of the travelers, infecting...