From School Library Journal:
Wallace, Zachary's stuffed purple pig, falls behind the couch. While trying to retrieve him, the boy discovers another world, one that can be reached behind any couch.
He comes upon troops of slippers; swarms of toy cars and trucks; grazing dust balls; the Valley of Stuffed Animals, of which Wallace is now president.
Early chapter-book readers will delight in this fast-paced romp. Inventive, appealing pen-and-ink illustrations appear throughout.