The new Dragon Knight, a flower-delivery boy named Guoguo, once sealed the evil Black Commander with the help of his good friends. After living a mundane life for too long, Guoguo’s heart grew restless again. However, craving speed and power, he could only channel his heroic passion into outsmarting his uncle. Then, a mysterious fire and a water sprite named Dida turned his life upside down, sparking a new adventure. 　　Guoguo reunited with his old partners Miaomiao and Xiaotousi to brave the mysterious Water Sprite Factory. But behind its seemingly prosperous and heavenly appearance, they discovered a terrifying secret! Between the hospitable Fire Demon and the elusive sprite Yinge, who is the factory’s true master? Is Guoguo heading toward a simple misunderstanding or a life-or-death destined showdown? How did the once cute and timid little flame transform into an arrogant Fire Demon? Could there be even more hidden, mysterious forces behind the truth? All these conflicts and mysteries await Dragon Knight Guoguo to unravel with the wisdom of his heart. 　　The ambitious mastermind schemes step by step, setting a trap—Guoguo faces a life-threatening crisis! Can he and his friends resolve their inner conflicts and restore the clear, refreshing spring water to the beautiful mountains of Waterland? Though growth comes with endless troubles, the young hero Dragon Knight will prove once again on this perilous journey that love and courage can change the entire world!