During the prosperous Tang Dynasty, the imperial court deposed the imperial envoys to patrol the Bingzhou to eliminate local abuses. However, the Jiedu envoy Li Chong secretly forged weapons and hoarded grain to rebel. The state's official died in mysterious circumstances and the governor disappeared. The situation was dangerous and unpredictable.
The mysterious deposed envoy sneaked into Bingzhou with the secret message of Long Yuanwei, and entered the city with the help of his old subordinate Wang Zhong and spy Ying Que. However, he found traces of the cold iron dagger from the Western Regions hidden in the wound of the deceased. The dragon pattern on his waist was vaguely consistent with the signature of the secret letter, and his identity became a mystery.
The deposed envoy holds the power to kill first and then reveal the truth, but he does not know that he has fallen into a situation where "the shadow bird is the bait", and his true identity is secretly related to the dragon emblem of the East Palace.
