2015 год. With Halloween approaching, Hank and his friends decide to watch a scary movie. The movie turns out to be a bit too scary for Hank, and he sees zombies every time he closes his eyes. Everyone tells Hank zombies aren't real, but when people around him start moaning and acting like the undead, he isn't so sure that's true. At the library researching zombies, he accidentally skips the word no in the sentence "there is no evidence that zombies exist." Hank is sure that there is a zombie invasion, so he fakes a stomachache to avoid trick-or-treating with his friends. Not wanting to trick-or-treat without Hank, the friends look up his research online, discover his mistake, and head out for Halloween fun.