Lin Yuechan, a top business lawyer, traveled through time and lived in the aftermath of the Dajing period. Her entire family was wronged and executed, and she was thrown into the cold palace. She was also set on fire and poisoned by Concubine Su, and she was pursued and killed. In a desperate situation, he is bound to the "Jedi Counterattack System" and acquires skills such as medical skills, toxicology, and photographic memory. He can escape death with the help of a lawyer's logical game and the system. She worked step by step to expose Su Guifei and her gang members' crimes of embezzling money and shipping and forging accounting books, using the emperor's help to disrupt the enemy's power, and counterattacked to become the third-rank Jieyu from the deposed palace. Faced with murderous intentions in the harem and undercurrents in the court, Lin Yuechan uses the law as a blade and wisdom as a shield. In the dual chess game between the palace and the court, she must not only wash away the family's grievances, but also control her own life and death destiny.