Shen Xiangwen, the Empress Dowager of the Yu Dynasty, is killed when Wan Shurong and her younger brother stage a coup at the palace. She suddenly travels through time to the modern era and becomes a university cleaner. By chance, she reunites with the reincarnated former emperor, Song Huaishan, and her daughter, Song Lihuan. Her sworn enemy, Wan Shurong, has also become an associate professor at the university. Still carrying her ancient memories, Shen Xiangwen causes plenty of amusing mishaps in modern life, but her extraordinary knowledge of history soon allows her to stand out, and she gradually falls in love with Song Huaishan. Wan Shurong and her younger brother have also traveled through time and plot to seize the Phoenix Jade Pendant so they can return to the ancient era and take power. Shen Xiangwen pieces together the clues and uses the pendant's power to return to the Yu Dynasty with Song Huaishan and Song Lihuan. Together, they thwart the villains' conspiracy and restore order at court. Having regained their memories of their past lives, the three join hands to protect the lands of the Yu Dynasty.