This is the second adventure of the young dinosaurs José (a Triceratops) and Ski (a Pteranodon). José helps to rescue Ski's little brother Firi, whose wings have become entangled in a thicket of thorny bushes. As the rescue is taking place, Rex, the Great Dinosaur of the North, is heard approaching. José's mother Cera confronts Rex, aiming to keep him occupied while José completes the rescue. When Firi is safe, José joins the standoff and saves Cera, cleverly and bravely distracting Rex. Ski adds further support from the air, and Cera and José are able to escape.