Lin Zhiqiu, the best judge of the year in the underworld, accidentally transformed into a vicious noble concubine in a palace fight in order to complete KPI. Faced with the mess left by the original owner and the emperor's cold murderous intention, she calmly took out the book of life and death (fake) and the soul-stirring pen (stationery version). During the day, she is a villain waiting to be exonerated; at night, she is a cross-border civil servant who avenges the wrongfully executed concubines. When the sinister emperor discovered that his concubine was no longer poisoning, but was keen on "investigating cases" in the middle of the night, and even discussed legal provisions with him, the entire harem's style completely went off the rails. It wasn't until the calamity of the country came that she used her merits as a sacrifice to protect the country for him. Only then did he finally understand - it turns out that the most powerful career CP is that I am in charge of life and death, and the queen is in charge of afterlife.