A history that has been tampered with, a mystery that spans thousands of years.
Lin Jian, a graduate student in the Department of History, accidentally traveled to the night when Luoyang City was destroyed in the late Western Jin Dynasty, and became the key to the struggle between various forces. The red butterfly birthmark on her wrist is actually the same as the assassin mark of the mysterious organization "Qingluan Pavilion". Prince Sima Rui regards her as a prophet, powerful minister Wang Dao is half-trusting of her, and careerist Wang Dun is pressing her every step of the way. What's even more frightening is that she discovered that history had been tampered with - the Crown Princess Cui Wan who was supposed to die for her country was still alive, Zu Ti, who was supposed to be loyal, was caught in a conspiracy, and the "Qingluan Pavilion" assassin who had the same appearance as her seemed to have known about her arrival...