Ten years ago, a strange stone that looked exactly like an egg was uncovered. It later turned out to be an ancient legendary Dragon Egg, which hatched into a dragon. This event is called the "First Hatching," and people discovered that they could tap into a dragon"s powerful energy only by speaking its language. Soon after, an international council chose gifted children to communicate with dragons and train them for impossible missions. These youngsters became the Knights of Dragon. Their missions ranged from retrieving ancient artifacts to averting looming catastrophes. They succeeded in extraordinary tasks by locating dragons and learning their hidden tongues across the globe. All went well until a group of defectors launched attacks on the Knights, threatening their fragile alliance. Yet the threat from defectors grew, forcing the Knights to rethink their strategies.