Modern lawyer Shen Zhaoning pretended to be the scapegoat for the betrothed prince and tore up the imperial edict in public, shocking both the government and the public. The prince Xiao Jinghuan wanted to watch her fall indifferently, but he was shocked to find that she was careful at every step and could break the palace rules with law. Pei Ruoheng, the daughter of the Household Department, wanted to use her to gain power, but the old nanny Jiang secretly handed over secret files, and the young minister Su Yansheng quietly turned her side during the trial. When the Queen Mother Chu discovered the mystery of her life experience, a palace murder case that had been buried for twenty years was restarted - she was not here to be a concubine, she was here to overturn the wall of this cannibal palace.