Competition is intense and the kids set out to make the best flying machine.
Bronson finds an ancient Mongolian cat hat. The hat is a copy cat hat. But others aren't so lucky. Meanwhile Mr. Gribble has plans to build an aquatic wonderworld on a beautiful stretch of the coastline. A water spirit is affronted when construction of the dam begins and she mistakenly believes that Bronson is the culprit who is building the dam.