Revenge is a Dish Best Served Cold Summary

Thirty years after graduating from Hasbrook High School in 1968, Sheldon Francis Stein is prepared to wreak vengeance on classmates who had never bother to befriend him long ago. Picturing himself as a character from J. D. Steinbeck's Catcher in the Rye, Sheldon has, over the last five years, constructed from animate and inanimate pieces a fearsome, living monster.

Reviewing his checklist, he discovers that he has neglected to learn to drive, so the monster must walk with him to the school. On the way, the monster utterly destroys a neighbor's Nativity and Santa display. Arriving in the gym, Sheldon is shocked to find that the majority of his classmates are already engaged in innovated and deadly acts of terrorism (including lasers and anthrax) against the small clique of long-ago popular kids...