The Great Zhou Dynasty was in turmoil, with the undercurrent of imperial power intertwined with the blood and rain in the world. A piece of "Mysterious Dragon Against Scales" that hides the dragon veins of the world has attracted a desperate struggle among the three powerful forces of the imperial court, Zhenbei Prince's Palace, and the "Blood Evil Sect", a gangster killer organization.
Shen Yanzhi, an orphan from a medical school with a humble background, has the "dragon blood" of the founding hero Shen's family sealed in his body. The half-piece of dragon-patterned jade pendant on the night of the family's destruction pushed him into the center of the whirlpool - he was both a "medicine man" who could detoxify hundreds of poisons, and a "key" who could control the dragon's veins.
Su Mingwei, the only daughter of the King of Zhenbei, met Shen Yanzhi for the first time in a snowy and cold river in order to find out the truth behind her father's mysterious poisoning. The two of them each hold half of a jade pendant, but they are in constant cooperation and suspicion. When she discovered that her father's death was related to Prince Zhao Xuanyu's tribute, and when Shen Yanzhi's dragon blood awakening caused changes in the world, the truth was far crueler than imagined.
Zhao Xuanyu, the seemingly cowardly prince, has been secretly planning for twenty years. He used the "Shanhe Sheji Tu" as bait and united with Jianghu forces to encircle and suppress the Blood Evil Sect, but in his actions he revealed his ambition to swallow the dragon's veins and usurp the throne to become emperor. And the half map hidden in his waist echoes Shen Yanzhi's jade pendant.
Chu Li, the master of the Blood Fiend Sect, controls the barbarian army to suppress the territory. Every move he made was directed at the core of the dragon's veins, even at the expense of himself. When the dragon's blood ice edge penetrated his body, and when the city god's temple ground suddenly went berserk, his wild laughter echoed in the bloody moonlight: "In three days, you will all become my sacrifice!"
Old Man Xuanji, a hidden master, knows the ultimate secret of Shen's dragon blood and the Sheji Map. Are the fragments of the scroll and the life-sustaining medicine he gave me a salvation or a curse? When the dragon vein
