During the summer before fifth grade, Ferris Wilkey has her hands full with her little sister terrorizing the town, her Aunt Shirley moving into their basement and her grandmother seeing a ghost--one who has wild, impractical and illuminating plans.

Leroy Ninker has a hat, a lasso, and boots. What he doesn't have is a horse -- until he meets Maybelline, that is, and then it's love at first sight. Maybelline loves spaghetti and sweet nothings, and she loves Leroy, too. But when Leroy forgets the third and final rule of caring for Maybelline, disaster ensues. Can Leroy wrestle fate to the ground, rescue the horse of his heart, and lasso loneliness for good?

While bumbling PI Percival Smidgely tries to find missing pig Mercy Watson, a trio of clever neighborhood sleuths follow a trail of hoof prints - and a delicious aroma - to recover their porcine wonder, in this uproariously funny, extra-special series finale.

After Mercy Watson follows the delightful scent and delicious taste of the pansies her thoughtful neighbors plant to beautify their yard, animal control officer Francine Poulet is called out to handle the case, which brings unexpected results.

After Mercy the pig snuggles to sleep with the Watsons, all three awaken with the bed teetering on the edge of a big hole in the floor.