When a forest fire comes to woods not far from the family nest at Pteranodon Terrace, the family takes the Dinosaur Train to visit a nearby area where a fire has already been, and the Conductor leads the kids on a Nature Tracker hike through the woods to see how new life is growing back - even after the forest fire's devastation. Buddy and Tiny ride the Dinosaur Train for a playdate with their old friend Petey Peteinosaurus, and learn that the train has added a new Aviary Car, for their various flying passengers. Suddenly, they are joined by a lost bird named Judy Jehelornis, who was displaced by the recent forest fires, and can't remember where her home is. Buddy, Tiny, and Petey act as detectives to figure out from clues where Judy's home is, and the Conductor makes sure she's brought safely home on the train.