Shen Zhiwei was forced to marry her sister into Prince Ning's palace. She just wanted to use the marriage to escape from the Shen family and track down the half-jade pendant and incomplete medicine account left behind by her mother. On their wedding night, she discovered that Prince Ning Xiao Jingheng, who was so ill that he could not hold a teacup steady, had an unusually steady hand. Xiao Jingheng also discovered that the legitimate daughter of the Shen family, who was described as dull and incompetent, could identify medicines, check accounts, and know how to find the real loopholes in a lie. One is investigating the death of his biological mother, Su Ruoheng, and the other is investigating the old case of the violent death of a noble concubine. The two "emergency cases" were gradually connected along the same batch of medicine, the same official seal and the same event. They started with three pacts, exchanged clues in trials, and redrawn the boundaries after mistakes. Until the real official seal clears the way for the false documents, and the East Palace blocks the palace gate in the name of escort, they must send the request for help that no one dared to accept twelve years ago to the court again before the power completely rewrites the evidence.
