Dong Xin and her senior sister Qiu Xu went down the mountain to Chang'an City to search for a piece of spiritual jade called Mu Xian, as ordered by their master. However, no one knew what the legendary piece of spiritual jade looked like. Dong Xin, who grew up in the mountains, has always been full of expectations for the city of Chang'an... However, where will the rotation of the gears of fate take her? Chang'an, can it really be Chang'an?