City in the Clouds.
- New York, NY : Scholastic, Inc, 1999.
- The Secrets of Droon .
#4
Uh-oh! Neal has a problem. He's turned into a bug-again. Eric and Julie hope someone in Droon can help. Princess Keeah thinks there might be a cure in the City in the Clouds. Too bad the friends only have one day before the city disappears!