Where Have All The Lizards Gone? (S04E09)

The Conductor invites the Pteranodon Family on an exciting journey to Lizard Island, only to find it overwhelmed by plants and insects, with very few lizards remaining. He realizes that the Changyuraptor Family, whom he had previously left there, has flourished and is consuming all the lizards, disrupting the island's ecosystem. Now, the Pteranodon Family and Mr. Conductor must figure out how to persuade the Changyuraptor Family to relocate, so they can restore balance to their home.