"Queen", but on the eve of the crown prince's ascension to the throne, the envoy sent by the new emperor broke off the engagement in public in the name of "unfortunate", and became the laughingstock of the country. In a desperate situation, she relied on her extraordinary power and courage to directly break into the new emperor's palace, and used herself as bait to reach a fatal deal with the new king Li Yuanhao, who had a violent personality and killed his brother to seize the throne. - She was willing to be his sharpest knife to eradicate the family and control the court. From then on, she became the first female prime minister in the history of Goryeo, and she stepped on those who once despised her. However, her relationship with Li Yuanhao was far from simple. She was a tool at hand, but was uncontrollably attracted to her tenacious soul; she regarded him as a ladder to revenge, but in his crazy actions of almost destroying and desperately protecting her, she saw the loneliness and scars behind his violent mask. When Shen Qingwei discovered that the truth about her family's destruction was actually closely related to Li Yuanhao. When Li Yuanhao realizes that she is the only light he wants but dares not have, this sadomasochism that begins with calculation and revenge gradually evolves into an abyss of mutual redemption and mutual confinement. In the end, in the ultimate game of intrigue and sincerity, they must choose: Should they go hand in hand, or lose their love forever?