Shen Jingzhe, the adopted daughter of the Taifu, was implicated in her father's crimes and was reduced from a golden branch to an abandoned concubine in the cold palace. On the surface, she is weak and submissive, but secretly she uses extraordinary courage and strategy to navigate the turbulent harem and court. Emperor Xiao Yan seems obsessed with romance and is mediocre and incompetent, but in fact he is deeply scheming. He regards Shen Jingzhe as a chess piece, but he is gradually attracted by his unique temperament and wisdom. The two went from testing and using each other to becoming evenly matched allies and lovers. At the same time, the gentle Prime Minister Xie Linyuan's true identity is actually the prince of the former dynasty who has been hiding for many years. Using his deep love as a web, he presses forward step by step with the intention of overthrowing the dynasty. In the intertwined love and hate and the game of life and death, Shen Jingzhe must break through the fog, protect the people he loves, and personally end this blood feud that has lasted for hundreds of years.