The lofty Kangxi Dynasty is about to come to an end. The ownership of the throne has triggered open and covert struggles among the princes. In the huge palace, under the peaceful appearance, murderous intentions are everywhere, and evil appears one after another. Just at this time, a girl Luo Qingchuan (played by Yang Mi) who was supposed to live an ordinary life in the 21st century accidentally traveled to this turbulent and treacherous world...