Modern emergency doctor Su Wanwan wakes up and becomes an unpopular concubine in the Prime Minister's Palace. She is forced to marry Xiao Jue, the rumored murderous king of Zhenbei, on behalf of her eldest sister. On the day the sedan chair was carried into the palace, she clutched the silver needle hidden in her sleeve and prepared for the worst outcome. Unexpectedly, when the hijab was lifted, what came into view was not a green-faced and fanged Rakshasa, but a handsome but pale face. Xiao Jue coughed up blood and took her into his arms, his voice low and hoarse: "I have been waiting for you for a long time." From then on, the cold-faced prince became her exclusive patron. When she treated her illness, he handed her the knife; when she was bullied, he supported her. When the storm in the court suddenly rose and secret arrows were fired frequently, he held her hand: "Wanwan, I want this world and you."