As the devoutly single Don Johnston is dumped by his latest girlfriend, he receives an anonymous pink letter informing him that he has a son who may be looking for him.

In the sleepy town of Centerville, the lives of a number of interconnected characters are disrupted by the undead.

When the Davison family comes under attack during their wedding anniversary getaway, the gang of mysterious killers soon learns that one of their victims harbors a secret talent for fighting back.