can warn the others, Pterano and his cronies, Rinkus, a Rhamphorhynchus, and Sierra, a Cearadactylus, capture her and set out to find the Stone. Upon discovering Ducky's abduction, the adults tell the young ones how Pterano led some of their herd during their search for the valley, but had accidentally brought his followers to a pack of Deinonychus. Pterano was able to fly away, but the event left him emotionally scarred, and he was expelled from the herd as punishment for leading his followers into danger. Because the adults are slow to reach a decision, Littlefoot, Petrie, Cera, and Spike take off by themselves in search of Ducky. Meanwhile, Ducky escapes the Flyers and falls into a cave while fleeing. After the children find her, Ducky comforts Petrie, who is distraught about his uncle's actions, by stating she could tell that Pterano is the least wicked of the three Flyers, and so still has a potential of doing good. Rinkus and Sierra suddenly re-capture Ducky and pursue the children in violation of Pterano's orders, but the children are able to outsmart the two evil Flyers. As the Flyers fly away, Petrie tells them not to go and a thunderstorm comes. Later as the thunderstorm comes and there is wind, thunder and lightning, the adult dinosaurs meet and Grandpa Longneck tells Petrie's mother to find another flier to help her and hurry. Meanwhile during the thunderstorm, Sierra displays mutinous feelings towards Pterano, but Rinkus convinces him to hold off betraying Pterano until they find the Stone. Pterano sings a song about how a very important creature he is. The children pursue the Flyers, hoping to reach the Stone before them. They reach inside the cave and sleep there, and the thunderstorm lasts until morning. The children wake up in the morning and aided by the Rainbow Faces, who suddenly appear and offer their knowledge of volcanoes, they manage to reach Threehorn Peak before the Flyers. However, both groups discover the Stone is just an ordinary meteorite. Lamenting over this realization, Pterano explains he had meant to create a paradise with the power of the stone, not realizing that this paradise already exists in the form of the Great Valley. Unwilling to believe the Stone is not magical, Rinkus and Sierra betray Pterano. However, as they start bashing the Stone to make it give them power, the volcano begins to violently erupt,