 New Year s 2000 is approaching, and Spooner Street is preparing for a big holiday bash. When Peter hears about the impending disaster of Y2K, however, he panics and locks the family in the basement. His fears turn out to be well-founded when the world s computer systems go haywire and civilization is destroyed by atomic blasts. After digging out of the rubble, the family decides to travel to the Natick Twinkie factory in the hopes of finding food and building a new town.