Best-selling author Rick Riordan presents best-selling YA author Stacey Lee's final book in her debut middle grade duology: a whimsical, mile-a-minute adventure inspired by Chinese mythology.

Twelve-year-old Winston Chu has already rescued his sister, saved the moon's qi, and kicked Mr. Pang's sorry magpie-turned-human butt to the curb-but now he's about to face an even bigger problem: Mr. Pang's older magpie-turned-human brother, Mr. Gu.

Sure, Mr. Gu might be the current front-runner to be San Francisco's next mayor, but, as Winston knows all too well, appearances can be deceiving-and Mr. Gu, despite his cheerful laugh and brightly-colored shirts, is definitely hiding something.

Because all of a sudden, there's an eerily punctual fog that seems to follow him on his trips to an island in the bay. And grown-ups are turning up all the across the city with no memory of who they are, but with plenty of enthusiasm for their favorite mayoral candidate. And then there's the flocks of exotic birds that have begun amassing in every corner of the city. For Winston and his friends, there's no denying something. . . fowl. . . is afoot.

And the only one who might have the answers they need to save the city? Their old nemesis, Mr. Pang. . .

Winston's magical adventures come to a thrilling end in this whimsical, rollicking ride filled with invisible windbreakers, mischievous mustaches, and badminton rackets of destiny.

Endorsed by Rick Riordan, author of Percy Jackson and the Olympians, now a hit series on Disney+.