A dinner party between two couples experiencing eleven different endings, all of which points to the same conclusion - the best possible life comes from the one lived the most in the present.
A psychotic man opens fire in a diner, murdering numerous people before killing himself. The survivors struggle in different ways following this horrendous event: a doctor doubts his own instincts and elects to use an experimental medical procedure on his wife, while a gambler believes he's on a lucky streak. A waitress begins engaging in promiscuous sex, and a young girl whose father is among the dead gains unexpected fame.
With the end of the world only hours away, self-absorbed James heads to the ultimate party-to-end-all-parties. On his way there, he saves the life of a young girl named Rose who is searching desperately for her missing father. This simple act sets James on a path to redemption.
In a seemingly perfect community, without war, pain, suffering, differences or choice, a young boy is chosen to learn from an elderly man about the true pain and pleasure of the "real" world.
While on a fishing trip, Harry Baldwin and his family hear an explosion and realize that Los Angeles has been leveled by a nuclear attack. Looters and killers are everywhere. Escaping to the hills with his family, he sets about the business of surviving in a world where, he knows, the old ideals of humanity will be the first casualties.