This drama tells the legendary story of Lu Zhen, the only female figure in the history of China in the Northern Qi Dynasty. Lu Zhen was born into a noble family of a royal businessman. In order to avoid being chased by her stepmother, she took the examination for maids and took refuge in the imperial court. In the court, Lu Zhen worked hard and became a female official with her intelligence. Because of her kindness, she touched Chu Jun Gao Zhan's heart. But the different status determines that this relationship is bumpy. The jealousy of maid-in-waiting Shen Bi, the little hatred of her first lover, and the Queen Mother Lou who killed her mother, all the intrigue and love-hate interweave are related to Lu Zhen. In the end, with his courage and wisdom, Lu Zhen successfully helped defeat a series of conspiracy to usurp power of the Lou family, and helped him ascend to the throne. Finally, due to a mistake, Lu Zhen failed to become the queen of Gao Zhan, but fortunately, they stayed together until Gao Zhan died. In the end, Lu assisted the young emperor Gao Wei and became a female prime minister. She was in charge of state affairs and silkworm affairs, became the most powerful female official in Daqi and the highest-ranking woman in the harem, and also became the Lord of the harem in practical sense.