Shen Hegui took the edict from his previous dynasty and traveled through time to the prosperous Tang Dynasty, where the power was rife. He originally wanted to hide from the world and protect himself, but on the night he returned to Chang'an, he cut off the prince's token - a blood-stained Chilong jade pendant - under the Suzaku Gate. The sound of breaking jade alarmed the Nine Palaces, and also awakened the female assassin Gu Shutang hiding in the dark alley. She was responsible for the blood feud of exterminating her family and was determined to take the lifeblood of the royal family. However, when the blade was at her throat, she recognized the incomplete tiger talisman on his waist that was engraved with her father's generation. The two of them each have their own plans for death, but they are bound by the same erased truth of the past. From then on, he held the weapon talisman, and she held the poisonous blade, and they conspired under the Dragon Chair to launch a counterattack that would overthrow the world.
