Ten years after the establishment of the Dajing Dynasty, the imperial power was unstable, the princes' competition for the throne intensified, the rivers and lakes and the court colluded with each other, and undercurrents surged. When the previous dynasty was overthrown, the jade seal of the country was said to be missing. It is said that the person who obtains the jade seal can command the old troops of the previous dynasty and shake the foundation of Dajing. Su Jin, the daughter of the guilty minister, sneaked into the palace as a "slave in clothes", waiting for revenge and looking for the jade seal. However, her identity was accidentally discovered by the "deposed king" Xiao Che. The two were forced to form an alliance of "mutual use", and were involved in a dispute about life and death, power and love in the multiple whirlpools of the palace, rivers and lakes, and borders.