After a royal decree granted marriage, Qin Wan, a modern medical student, accidentally traveled through time and became the princess of the Dajing Palace. When she first entered a wealthy family, her medical skills and wisdom became the only bargaining chips for her protection, but she was also involved in the undercurrent of swords and blood.
Prince Xiao Yan is cold and decisive, holding military power in his hands, but he has a deep hatred buried deep in his heart. He originally regarded Qin Wan as a chess piece, but her tenacity broke through his defenses as they stood side by side in life and death time and time again. Marriage first, then love, deep love without realizing it, but it is also destined to be accompanied by temptation and betrayal.
In the deep palace, the Queen Mother's niece Xie Miaoning is deeply in love and sets up troubles openly and secretly; Nan'an Crown Prince Shen Zhiya is as gentle as jade, but he is unclearly involved in the hidden connection of "Su". Powerful plots and human hearts are intertwined, sweetness and cruelty coexist, and every step is like walking on thin ice.
When the remaining pages of the "Su Book" were pieced together, the name of the mastermind gradually emerged, and Qin Wan realized that this marriage was not an accident, but a chess game that had been laid out by fate.
What she has to choose is not only love or not, but also life and death.
