"Youngsters are sure to delight in the exploits of this butter loving pig, savoring the 'wonky in the extreme' text and energetic, innocent art." School Library Journal Some may find it wonky to take a pig to the drive in. But not the Watsons, who think the movie's title, When Pigs Fly, is inspirational. And not their beloved Mercy, who is inspired by the scent of real butter from the theater's Bottomless Buckets of popcorn. As they pull up in their convertible, Mercy lifts up her snout and becomes a pig on a mission, leading a delirious chase that's trailed by hapless rescuers reunited from Mercy's earlier adventures.

小豬梅西系列故事是美國圖書館協會推薦兒童圖書，
美國兒童青少年圖書館協會選書，
美國芝加哥公共圖書館最佳少兒圖書，《紐約時報》暢銷圖書，曾獲得美國兒童圖書協會兒童最喜愛的書籍獎。
本書為該系列故事之一。
好讀又好看的好書，讓你從此愛上閱讀！