It's autumn, and Covenly residents are gathering at the annual fall fair. The three Weird Sisters--Hildegurp, Glubbifer, and Yuckmina--are running a Flying Broom ride for the town's kids and nine-year-old Jessica Nibley is overseeing the petting zoo nearby.

Suddenly, a prized show chicken goes missing and there's a new mystery to solve. Suspecting fowl play, the four friends team up to find the hapless hen in a madcap hunt that involves an enchanted roller coaster, a frog in a top hat, and a sticky trail of goo. As they sleuth, the sisters also discover some unfortunate and unintended consequences of their magic, bringing about a gentle lesson in apologizing.

The third book in this whimsical chapter book mystery series is full of clever wordplay, humorous misunderstandings, and dynamic illustrations. With hints and phrases from Hamlet, readers are reminded that actions have consequences that can't always be undone.