In the third year of Yong'an of the Dajing Dynasty, when the capital city was closed due to heavy snow, a "collaboration case" that had been dormant for three years suddenly stirred up trouble again. The survivors of the Sinchen family returned from hibernation and sneaked into the edge of the whirlpool of power in civilian clothes. In her hand, she only had a half-broken rubbing of the tiger talisman and a strange message before her death.
Bizarre murders have occurred one after another in the capital. The deceased are all secretly related to the old cases. Their deaths are strange and they all hold a wordless copper nail in their hands. Factions in the court are fighting openly and secretly, and the forces in the harem are undercurrent. It seems that everyone is covering up the same truth. With her extraordinary resourcefulness and keen insight, she moved step by step in the fog, disguising her identity and dealing with various forces.
The clues are sometimes broken, sometimes intertwined, and the direction they point to becomes more and more terrifying - the family injustice case back then turned out to be a huge conspiracy that affected the foundation of the dynasty. Not only does she have to vindicate her family, but she also has to survive in this murderous chess game. As the pieces of the truth gradually come together, she discovers that the people around her are either enemies or friends, and she has already fallen into a bigger whirlpool. The road ahead is full of murderous opportunities. She can only use wisdom as her blade and courage as her armor to find light in the darkness and uncover the shocking secrets buried by history.
