Su Wanqing, a graduate student in forensic anthropology in the 21st century, fainted from overwork in the autopsy room, traveled through time and became the concubine of the Prime Minister's Palace of the Dayin Dynasty. She married into Prince Jing's Palace for her sister-in-law and became the seventh bride of Prince Jing Xiao Jue, who killed six princesses. On their wedding night, she was actually arranged to nail the coffin of the "dead" Xiao Jue to celebrate her wedding. In a desperate situation, she unexpectedly awakened Xiao Jue who was suffering from cold poison in his body with blood, and even found that she could see ghosts.
Su Wanqing awakens to the underworld pawnshop system and can trade with ghosts to gain abilities. She helps Xiao Jue suppress the cold poison and resolve the crisis of resentful spirits in the palace. She also discovers that the former princesses were all murdered. The two reach a deal. She helps Xiao Jue find out the truth about the blood curse and the murder of his wife, and Xiao Jue provides her with shelter.
Relying on the calmness and rationality of a forensic doctor and her pawn shop skills, she repeatedly resolved the frame-ups of the Prime Minister's Palace and the second prince. At the Hundred Flowers Banquet in the palace, she used the power of ghosts to expose the old conspiracy of the second prince and overthrow the influence of the Prime Minister's Palace. But later, it was discovered that there was a mark on his arm that was the same as Xiao Jue's blood curse. He was informed by the system that it was linked to the blood curse and became a potential living container.
Su Wanqing and Xiao Jue are tightly bound by the blood curse. While testing, using and supporting each other, the two work together to explore the root of the blood curse, and face the murderous secrets of the court and the palace. A life-and-death game begins with survival as the bargaining chip.
