Description：In the Western Han Dynasty, the world was just beginning to settle down. Under the peaceful appearance, the undercurrent was surging. Deep in the palace, there were swords and shadows, and murderous intentions were lurking. A fight for the heir unexpectedly changed the fate of a girl and even the entire Western Han Dynasty. The girl Yun Xi (played by Ruby Lin) escaped from the palace with her wet nurse after a narrow escape from death. She was displaced in her early years and had no chance to fall in love. Fate arranged for her to enter the palace again, but she changed her name to Dou Yifang and had to deal with the vicious and suspicious Empress Lu (played by Dai Chunrong). She was cautious and insecure. Fortunately, her cleverness made Empress Lu happy, and she secretly sent her to Dai to monitor Liu Heng (played by Chen Jianfeng), the son of Empress Bo Ji, in order to plot to seize the heir. In the turbulent river of history, the beautiful, passionate, persevering and intelligent Yifang is destined to write an extraordinary stroke... This film is based on the story of an instant fall in love.