O filme retrata uma guerra fictícia entre as forças da OTAN e o Pacto de Varsóvia que rapidamente se transforma em uma troca em grande escala de mísseis nucleares entre os Estados Unidos e a União Soviética. A maior parte da atividade se concentra nos moradores de Lawrence - Kansas e Kansas City, Missouri, bem como vários fazendas situadas ao lado de silos de míssil nuclear.
The life of young newlywed, Fern O'Neil, is turned upside-down when her husband is called home to visit his dying father in Ireland. When she fails to receive a phone call from her husband, she contacts the airline and discovers he was not on the plane. Further investigation reveals that her husband is not who she thought he was. Her search ultimately takes her all the way to Ireland, where her sanity and, of course, her story come into question.
In a badly-overpopulated future, where each couple is only allowed one child and where people over 65 are forbidden medical care under a very draconian set of laws, a young couple, pregnant with their second child (the first died shortly after birth) enlist the help of an elderly former US Senator to help them escape to Canada.