Neville Brisket wakes from a bizarre dream about a stumpy finger up his nose—only to find his room wrecked and his dog in the laundry basket.
Things get even weirder when he’s flushed down the toilet into the land of Under, where a case of mistaken troll-dentity lands him with a revolting new family. Can Neville escape back to Over, or is he doomed to a life of rat patties and left sock stew?