Wendell Fultz's room isn't a mess. It's a total pigsty. But even Wendell's own mother can't get him to clean it up. Wendell doesn't think the mess is so awful. In fact, he doesn't even mind it when one day he discovers a real pig sitting on his bed. Then more pigs show up, and the mess grows and grows. Wendell finds hoofprints on his comic books. And his baseball cards are all chewed. Living in a pigsty isn't much fun anymore. But Wendell's got a plan.