Su Qinghuan, a modern social animal, suddenly dies and wakes up, and her soul is revealed to be the legitimate daughter of the Prime Minister's Mansion of the Dajing Dynasty. The original owner was persecuted by his stepmother Liu, and the half-piece of the lotus jade pendant left by his biological mother became Liu's inevitable target - this jade pendant contained the secret key to the military talisman of the previous dynasty and the antidote, and was the key to Liu's restoration of the previous dynasty.
In order to seize the jade pendant, Mrs. Liu repeatedly killed Su Qinghuan, and even used the palace decree to marry her to the regent Xiao Jue who was rumored to have "killed three princesses" in an attempt to silence her at the hands of the prince. Su Qinghuan saw through the vicious plot and decided to use it: by marrying into the Regent's Palace, she could not only use Xiao Jue's power to protect herself, but also find out the cause of her biological mother's death and regain her belongings.
Xiao Jue seems to be cold and cruel, but in fact, he secretly protects Su Qinghuan because of old favors (Su's mother once helped him out of trouble) and the secret of the jade pendant (relating to the truth about his mother's poisoning). The two started from a "interest-bound" marriage, and gradually uncovered the complete secret of the jade pendant while dealing with the Liu family and the remnants of the former dynasty behind them. They also developed a feeling of sympathy for each other in the intrigue and secret struggle of swords and swords.
On the one hand, there is the stepmother's pressing step by step, the restoration conspiracy of the previous dynasty, and on the other hand, the regent's soft-spoken and soft-hearted protection, hidden in the details. Su Qinghuan combines modern wisdom with ancient family fighting strategies to protect the jade pendant, avenge her mother, and stop the rebellion. In this crisis-ridden contest, she and Xiao Jue work together to tear away the layers of fog, protect the tranquility of Dajing, and find their own new life.
