The Creeps are in trouble, again. When rule breaking during one of their investigations lands the detectives in "service detention," the four friends find themselves lugging pumpkins off a foreclosed pumpkin patch. To thank them for their service, Sheriff Obie allows each Creep to take home a pumpkin to carve into a jack-o-lantern. Bad idea. Once carved, the jack-o-lanterns come to life--and attack everyone within reach! It turns out the pumpkins came from a cursed patch, and to stop the Attack-o-Lanterns from destroying their town, the Creeps will have to team up with the patch's unpleasant owner, Old Lady Bitterwood, who happens to be a witch.