Su Wan, a modern female lawyer, accidentally traveled through time and transformed into the legitimate daughter of the Shangshu Mansion. Little did she know that she had already been involved in a substitute conspiracy - she was forced to enter the palace as a concubine because she looked similar to the late emperor Bai Yueguang. When she first entered the palace, she was deeply involved in the open and covert attacks of various forces. The seemingly beautiful concubine was actually surrounded by dangers. In this harem full of calculations and betrayals, Su Wan relied on modern thinking and legal acumen to resolve crises time and time again. The emperor's complicated emotions towards her, from the initial use of her as a substitute to his gradual heartbeat, also made this relationship full of variables. When Bai Yueguang's secret gradually comes to light, can Su Wan escape the fate of being a substitute, protect her true heart in the bloody palace battle, and gain her own true love?
