Liu Yunshu, the elegant and observant daughter of the Shangshu, Xiao Yan, the third prince who is cold and good at pushing, Chu Huai'an, the unruly and capable military champion, and Lin Miaorong, the daughter of the minister of punishment, who is clever and eloquent - these four leaders in the capital who seem to have no intersection with each other are forced to join hands because of a bizarre case.
The Buddha's treasure disappeared from the ban, the girl who cried at night captured the hearts of the people, the aliens from the outside brought ominous prophecies, and the most beloved Princess Yongning disappeared inexplicably deep in the palace... Behind each of the strange cases, intricate mechanisms, treacherous formations, secrets of the past dynasty, and the ghosts of the human heart are intertwined into a web. The four people relied on their different but complementary talents to unravel the cocoon in the fog.
However, they gradually discovered that every time they solved a mystery, they were one step closer to a deeper conspiracy. All the clues eventually point to a secret word buried in blood and time, and a shocking secret that can shake the foundation of the country.
When trust is tested and friendship faces life and death, can they find the treasure, save their loved ones, and uncover the heavy shady curtain covering the prosperous age in the turbulent Jade City?
One-sentence summary: The four heroes in the capital explore strange cases, decipher code words, and solve mazes. Finally, they discover that all conspiracies point to the depths of the palace - and beside the dragon chair, a shadow has quietly stood.