Nangong Jun, the young master of the Nangong family, died strangely. He became a living dead inexplicably and was buried under his ancestral grave. He didn't know who killed him, so he could only crawl out of the tomb to find the real culprit. Su Ruoxin, the captain who touched the gold, never thought that he had stolen the tomb for many years. After getting acquainted with Nangong Jun, he buried his love and followed him around the world to find the real murderer. Just when Nangong Jun knew the murderer who killed himself and his father, he discovered that there was a bigger conspiracy waiting for him. There are rumors in the world that the ancient tomb of Li Bai of the Tang Dynasty is buried under his family's ancestral tomb, where these two treasures are stored, the "Taibai Suicide Note" and a Cicada Sword. Nangong Jun spared no effort to search for the ancient tomb of the poet, but he discovered something even more bizarre. It turned out that there was another person behind the scenes who ordered the murderer to kill his father, his half-brother who had been separated since childhood. Wandering between family feud and sibling affection, Nangong Jun is caught in a dilemma. At this time, his brother accidentally found Li Bai's ancient tomb, but he disappeared from the world. At the same time, martial arts heroes were often brutally murdered or disappeared mysteriously. Nangong Jun fought against all odds and would not give up until the case was solved. After many difficulties, when he was about to capture this person, he discovered a secret, that is, he was not a citizen of the Song Dynasty, but a royal descendant of the Xixia Emperor Li Yuanhao. All martial arts people stayed away from him, and his loneliness and betrayal made him miserable. Just when he was depressed, he finally found Li Taibai's ancient tomb by chance. Not only did he find the "Taibai Suicide Note", but he also found the Tianchan sword that was made with the same furnace as his brother.