The kids discover a canyon of fruit trees and decide to keep it secret, but things may have to change when the Sharp Teeth decide to use it as an entrance to the canyon.

After an earthshake dries up the fast-water, the dinosaur kids try to fix the problem by removing the rocks. On the way, they meet their old friend Mo.

While trying to learn how to fly Guido is blown into a cave with Petrie, and they encounter a blind old flyer called Swooper.

A herd of sand creepers (crabs) comes to the Great valley, so the gang decides to investigate why they are there.