After the Shengshi Polo case, Su Wuming encountered a series of kidnappings caused by the mysterious man Han Tang. The three kidnapped people were all related to the %Jiuchonglou Murder Case. At that time, all three people had identified Han Canjun's wife Liu Rong as the murderer of her husband.Su Wuming and Yongzhou Sima Yuan Chong were knocked unconscious and taken into an underground palace that was a replica of the nine-story building, and they faced the strongest opponent in their lives!

Su Wuming was forced to fall into the trap of the unsolved case. He peeled off the cocoon and broke through the loopholes in the testimony one by one to find out the truth.