Former high school friends run into each other years later and drunkenly decide to make good on their promise to marry each other if they're both still single by 30 - only to discover too late all the things they liked about each other when they were younger have changed.

The zombified leaders of the free world rise from the dead to hunt down a group of ill-fated teens and give them a lethal lesson in American history. Their only hope for survival is to summon the demonic spirit of John Wilkes Booth.