Yun Fei Xue's father, Yun Tiangang, and his brother, Yun Fei Shan, were assassinated eight years ago during a mission to escort a dragon vein. Yun Fei Xue, who had just suppressed the phantom in his body, received the sad news of his father and brother's tragic death and knew that if he wanted to avenge his family and revive the Yun family, he had to hide his strength. But behind the scenes, he gathers a group called "Shadow" to investigate the mystery. The seemingly carefree life in Hidden Dragon City is in fact full of crises. After investigation, Yun Fei Xue finds the clues of the past, and follows the trail to the organization behind the scene - the Golden Dragon Guard. The Golden Dragon Guard is no longer a trusted bodyguard for the emperor, but an evil organization controlled by the former eunuch Li Shengyi, with the crown prince as a puppet, whose power is spread across the temple and the rivers and lakes. For both public and private reasons, Yun Fei Xue wants to eradicate this scourge, but the Golden Dragon Guard is too powerful and meticulous, and at present Yun Fei Xue is not strong enough to confront it, so he can only sabotage its plans in secret. But the Golden Dragon Guard has become more and more arrogant. First, it struck out in secret, exterminating the Eastern Yi clan and robbing them of the Xuan Yuan Pills, which increase their strength. And then Xiao Wuyi, a pawn of the Golden Dragon Guard, also secretly designs to divide Yun Feixue and his partner Wen Qingqing, using Wen Qingqing against Yun Feixue. On the other hand, the Golden Dragon Guard designed to trap the Princess of Ice City - Xue Siyu, who had been helping Yun Feixue, and Xue Siyu was forcibly recalled by her family. The Golden Dragon Guard is also suspicious of Yun Feixue and points all fingers at him, and he understands that he cannot sit on his hands any longer. Through the "Shadow", Yun Fei Xue learns that the Golden Dragon Guard will soon have a mysterious deal with the Ye family on the Thousand Illusions Island, where Yun Fei Xue helps the Ye family win the Jade Vein and tide over the difficult times, thus forming a brotherhood with the young master of the Ye family, Ye Qingyu. Through Ye Qingyu, Yun Feixue learns that the Golden Dragon Guards have been secretly searching for precious treasures to help the Holy Lord - a mysterious martial arts manual that Li Shengyi used to train, which was actually left behind by Yun Feixue's long-lost mother. Meanwhile Yun Feixue pries