第三次世界大战已经发生，美国面临崩溃。九个陌生人躲藏在得克萨斯州农村农舍地窖。他们是在核攻击中幸存下来的受害者。他们在等待政府援救的同时必须得抵挡住饥饿，幽闭恐惧症，性格冲突，放射病和成群的恐惧，死亡的难民，这一切都能够随时将他们毁灭。不过很快最后的灾难来临了……Searching for a happy ending to a tale of unimaginable disaster and horror, nine strangers find themselves holed up together in a farmhouse cellar in rural Texas. The United States has hastily become embroiled in World War 3. A young doctor named Hunter survives the nuclear attack and is thrown together by happenstance with a group of wounded and frightened victims, including Elizabeth, a strong-willed confidant to Hunter, Brad - an antagonistic redneck jackass, and Jennifer, a barely coherent young woman suffering from severe post-traumatic stress. Together, they attempt to endure the devastating holocaust as they struggle with claustrophobia and conflicting personalities. In a makeshift shelter, Hunter and his dying companions wait for news from the government while fending off hunger, radiation sickness, and a horde of frightened and dying refugees.