Lin Wei, a modern social animal, traveled through time and became Shen Wanrong, a noble nobleman of the Dasheng Dynasty. Because she looked exactly like the late Queen Shen Qingci, she became the emperor's stand-in. The side hall of Changchun Palace is cold and damp, and there is a woman sobbing late at night. There are fatal rules hidden in the dark - don't listen at midnight, don't go near ancient wells, and avoid the new moon. The palace maids disappeared mysteriously, the concubines each had their own hidden agendas, the queen mother hid her hidden meanings, and the wise concubines hid themselves from the world and hid their secrets. Lin Wei relied on modern thinking and keen observation to record the rules and solve the mysteries. In the double strangulation of palace intrigues and supernatural crises, while acting as a docile substitute, he searched for the truth about Shen Qingci's death and the core of the deep palace rules, vowing to find a way out of this cannibal cage.