When a curious young explorer named Kai discovers a giant locked door hidden inside a jungle cave, he never expects what waits behind it. With a rusty key and a brave heart, he unlocks a secret world-Dragon Island. But this magical land is in danger. Dragon eggs won't hatch. The sky is dim. The powerful Fire Wells are fading. The dragons believe the human world is causing the trouble, and only Kai can help. In this exciting adventure, one boy learns that even small actions can protect something truly magical.