This grim, weirdo allegory—a little Lord of the Flies, a little Animal Farm—sets us down on a dystopian island inhabited by pigs that eat the world’s refuse: toasters, radioactive waste, toenail clippings. Four kids also live here, moving this garbage from the coast to the pigsty. Some adults also occupy the island as a ruling class. Then people start arriving amid the trash. As you might guess, the morality of feeding them to the pigs is rather fraught.