Shen Zhao, a doctor of history, transformed into a deposed empress. He thought he could escape with a piece of paper called a "deed of peace and separation", but he was entangled by Emperor Xiao Yan - on the back of the deed, there were clues to the late emperor's edict. She originally wanted to protect herself wisely, but she found that the nuns, palace maids and even the newly arrived minister of etiquette Pei Jingxing who were closest to her had their own agendas. When King Xiao Jingyan of Jin also got involved, she had to join forces with Xiao Yan to find out the truth of the edict, but in the process she gradually discovered that the so-called time travel may not be accidental.