Two soldiers from opposing sides cross paths in a city demolished by a devastating war that occurred years before. While they approach one another with suspicion and some hostility, they soon realize they need one another to survive.

When a suburban dinner party is interrupted by an announcement that a nuclear attack on the U.S. is imminent, the party goers scramble home to try and find a way to survive. However, when several families discover that their neighbor, Dr. Stockton has built a bomb shelter for just such an occasion, everyone turns against one another in an attempt to be invited inside the shelter. Will things be able to return to normal if warning turns out to be false?