In an accident, Yuan Qingluo traveled to the Tang Dynasty through the ancestral lotus mirror in his family and became the second daughter of the Shangshu Mansion. With her modern knowledge and wisdom, she quickly established a foothold in the mansion, and attracted the attention of Prince Li Xian with her talent and appearance. The two fell in love at first sight, and their feelings gradually grew.
However, as Wu Zetian's son, Li Xian was at the center of the whirlpool of the court's power struggle, and his fate was beyond his control. As Yuan Qingluo gained a deeper understanding of the Tang court, she discovered that there was a shocking secret hidden behind the lotus mirror - not only could it travel through time and space, but it was also inextricably linked to Wu Zetian's rule.
Yuan Qingluo realized that her love with Li Xian was destined to face a huge test. On the one hand, Wu Zetian became suspicious of her identity and began to investigate secretly; on the other hand, Li Xian's adviser Zhang Jianzhi persuaded him to raise troops to seize the throne to end Wu Zetian's autocratic rule.
In the choice between love and destiny, Yuan Qingluo and Li Xian fell into a dilemma. In the end, Li Xian launched a coup under Zhang Jianzhi's planning, but failed due to the disparity in power. Wu Zetian was furious and ordered the execution of all those involved in the coup. In order to follow Li Xian, Yuan Qingluo chose to die with him. The two of them became eternal legends in the light of the lotus mirror.