It started with the PAW Patrol entering the jungle on the PAW Patroller, they were visiting Tracker and Carlos. For Tracker and Carlos, they were finished building the monkey gym for the monkeys to play and exercise. As the monkeys arrived, they enjoy the gym, in fact, Carlos was knowing the PAW Patrol would like it too. But when a monkey was swinging on a tire swing, the rope holding it snapped, letting the tire to roll away. Tracker and Carlos started to look for it, but the jungle is so thick, couldn't find it. Tracker heard a rumbling sound somewhere in the jungle. And then, an elephant named Molly came by, scared the monkeys, and ran off. She looked upset, Carlos started to wonder what the problem would be.
The PAW Patrol arrived to the gym, and they were enjoy the jungle air. Tracker and Carlos were happy to see them. Ryder and the pups were impressed the way their friends built the monkey gym, even Rubble thought it was solid construction. The monkeys were still scared since Molly ran by. Then suddenly, another elephant appeared out of the bushes, it was Molly's sister Happy, and just like Molly, she was upset too. Happy started tracking sounds by lowering her ear towards the ground. When Tracker started to do the same thing, he heard the same rumbling sound from earlier. Then, Happy ran off into the jungle. Everyone thought there could be trouble from the rumble. And, Tracker thought it was strange because the elephants weren't running from the rumble, they're running towards it.
Ryder knew they need to help, everyone head towards the PAW Patroller. Marshall entered a barrel and rolled towards the Patroller, but he didn't crash into the pups. As the pups got geared up, Ryder told them about Molly and Happy the elephants running towards a rumbling in the jungle, it's up to the team to find out what it is and why it's making them upset. Ryder hired Skye to fly in her helicopter to search for the elephants by air, Tracker to use his tracking skills to find the elephants on the ground, and listen for whatever is causing the rumbling, and Rocky to help Carlos fix the tire swing. As everyone was ready, they deploy in their vehicles, and off they go to find the elephants and solve the rumbling mystery.
As Ryder, Tracker, and Skye were looking for the elephants, a monkey started following them. For Rocky, he was helping Carlos fix the tire swing. The reason why the rope snapped is because it was frayed. So, he started replacing it and the tire with new ones in his truck. Ryder and Tracker had found elephant footprints leading towards the bush, and the monkey is still following them. Skye found Molly and Happy from above. As they were continuing on foot, the rumbling sound is closer, it's loud. The sound came from a baby elephant named Snort, Molly and Happy's little brother. The reason he made the sound is because the lost tire got stuck on his foot, he was calling for help.
Ryder was about to help them get the tire off, and he had to be careful, since elephants startle easily, but the monkey, who was following the PAW Patrol scared Snort. Snort ran off towards a river with the monkey chasing him. They both got aboard a raft and started to float away down the river. Tracker hopped onboard the raft, and it was wobbly. Snort threw the monkey high, but Skye caught it on time with her harness. Tracker used his cables to pull the raft back to shore. After the Snort was saved, Ryder was taming him as Tracker used his cables to pull the tire off his foot. After the tire was off, the monkey started to play on it.
Back at the monkey gym, the new tire swing was all done, the monkeys started swinging on it. The elephants arrived to say "thank you," and Ryder said, "Whenever you're in trouble, just (elephant sound) for help."