In the aftermath of the dragon's attempt to rain fire and death upon the world of EeNara, Rex and his friends' journey to the city above the clouds, Grand Heights. While there, they struggle with what it means to be the saviors of their world, while simultaneously confronting the hardships of growing up. Now the dragons have returned and set their sights on a prize that threatens the very future of the planet. Once again, the six young warriors are called upon to stand between their world and oblivion.