Sophie must keep the human world safe from mischievous goblins, sprites and elves. It's the turn of the Spider Gnomes, gruesome man-sized spiders who make their webs in the trees of the Shadow Woods, to do battle with the Guardian. When the whole town becomes infested with spiders, Sophie and Sam realise something is seriously wrong, and the daring duo enter the Shadow Woods to investigate. During a terrifying encounter with these eight-legged Shadow Creatures, Sam gets bitten and starts acting very strangely!