In the Chongzhen era at the end of the Ming dynasty, internal strife and foreign threats converge. Modern graduate student Gu Qingxian touches a jade pendant and transmigrates into the body of a concubine-born son, using his knowledge to defend a small city. He studies on Mount Hua, learns secret arts, and makes allies, all while interfering with history. The jade pendant is cracked, and he has only one chance.
