On the seventh day of March in the twenty-fifth year of the Jiaqing period, as the Holy Spirit was about to go on a hunting tour, the silver seal in the lobby of the Ministry of War disappeared from the heavily guarded warehouse. The only thing left in the seal box was a string of copper coins of unknown origin. The whole court was shocked. Emperor Jiaqing was furious and believed that there must be a traitor, so he ordered Prince Zhuang Mianke to solve the case within ten days.
The preliminary investigation of Mianke identified three officials who handled the matter. Under torture, the clerk Bao Gan confessed the "truth" about the clerk Yu Huiting's dereliction of duty, stealing seals, and bribing money to cover up the crime during the Autumn Festival in Rehe last year. The case seemed to be solved, but Liu Yong, a veteran official, discovered the flaw in it - how could a junior official have the courage to complete such a covert move? Emperor Jiaqing also felt something was fishy and secretly ordered Li Yunfan, a doctor in the Ministry of Punishment, to conduct a secret review. Fake official documents stamped with the seal of the Ministry of War suddenly appeared on the black market in the capital, and rumors spread that the "Dragon Seal" would cross the sea to the east.
In the process of peeling off the cocoon, a secret organization codenamed "The Fallen Dragon Society" surfaced. With the secret help of Liu Yong, Wang Jie and other loyal ministers, Li Yunfan gradually uncovered the shocking conspiracy behind the old case in Rehe - the theft of the seal was actually a cover-up for the smuggling of water transport arms. The mastermind behind the scenes was actually Prince Rui and his son colluding with the Shen Yu Party in an attempt to stir up trouble when the emperor passed away.
When Li Yunfan led his troops to the thief's nest and recovered the dragon seal, he discovered that what he had touched was only the tip of the iceberg. Although the true seal has been restored to its original position, the bell has sounded for the sudden death of Emperor Jiaqing. The new emperor Minning is facing a crisis of collapsed officialdom and turbulent undercurrents. On the tower of the capital city shrouded in darkness, Li Yunfan looked at the lights of thousands of houses, knowing that the mystery of the Tiger Talisman, which was related to the country, was far from the end...
