Newcomer McElmurry offers a madcap romp with a plaid that spreads like the flu. Little Madison Pratt finds a purse in the park, a plaid purse with a sad blue inside: “Don't worry. I'll take care of you,” says Madison. But as she steps along, the plaid on the purse starts to crawl up her arm and the next thing you know, Madison has a bad case of the plaids, from her allplaid clothes to the plaid blush on her cheek. She follows her doctor's orders to rest easy, but a small plaid burp escapes her lips (product of the non-plaid cola she is sipping) and taints the rest of the town plaid, all plaid. In a brainstorm, Madison returns to the park where she dropped the purse and turns it inside out, only to release a plague of melancholy blue over everything. Life returns to normal only after Madison sings an extra-silly round of her extra-silly song, which just goes to show that “as you probably already knew, with a silly grin on you can't stay blue.” McElmurry has written the story in rhyme, but she keeps the wordplay on the ragged side, with broken syncopations, to keep both readers and listeners alert. The artwork is jazzy and two-dimensional, with, of course, the emphasis on color, as a book about plaid really ought to do. (Picture book. 5-7)