The film starts with Elliot telling a campfire story about the legend of the Wailing Wampus Werewolf, which terrifies Domesticated Boog and makes him decide to not attend their annual summer camping trip until he knows the werewolf is gone. Elliot and their woodland friends decide to team up to uncover the mystery of the Wailing Wampus Werewolf and scare the fear out of Boog.