It started at the Dino Rescue Center in the Dino Wilds, a male Stegosaurus was sick with a cold. Taylor Turbot and her mother were helping him by covering his nose with a tissue. Dr. Turbot told her daughter to call Rex that they need lemons and mint leaves to make medicine. As Rex got Taylor's call, he began get the supplies.
Rex first started to get lemons from a tree with the help from a Brachiosaurus. Then, began to get some mint leaves. As his bag was full of lemons and mints for some medicine, a female Pterodactyl snatched from him. Now that Rex was out of lemons and mints, he began to call the PAW Patrol for some help. As Ryder got Rex's call he and Skye hopped into their vehicles and drove and fly to help Rex.
As they met Rex near the lemon tree, he needed some air support to find the Pterodactyl and the bag. Ryder asked Skye to fly up high for an air search. But, before Skye could fly, a Tyrannosaurus Rex appeared, so they couldn't move a muscle. After the T-Rex walked away, Skye could finally look for the bag.
Skye was flying close towards a rocky mountain to see if the Pterodactyl's there. And she got close, the dinosaur was there and it still has Rex's bag. As she getting closer, the Pterodactyl scared her away. Ryder send Rex to drive up the mountain to talk to her. As he got close to his bag, he saw the Pterodactyl's egg in it, she was looking for a perfect for her egg.
Rex told the Pterodactyl that he needed the bag to help a sneezy Stegosaurus. Before Rex could his bag back, the T-Rex appeared again. The momma Pterodactyl tried to scare it away, but the T-Rex had caused a rock slide by slamming his tail onto the ledge. The rocks were going to fall onto the momma's egg, so she quickly saved it, but two boulders pinned her left and got her stuck. Rex quickly picked the egg to keep it safe, then Skye used her dino-copter to move the boulders off of the momma Pterodactyl. Luckily, her wing was never hurt, she was able to fly. Now, that the Pterodactyl was safe, and Rex got his bag back, they began to head back to the Dino Rescue Center.
The momma Pterodactyl was happy that her egg is safe. Ryder said, "Whenever you need a high-flying dino rescue, just yelp for help." The Stegosaurus was finally sipping the medicine, he'll be better pretty soon.