Modern forensic doctor Jiang Yue traveled through time and became an abandoned concubine in the cold palace. The original owner was sent to the cold palace because of being framed. The prince of the old emperor (the late emperor) died suddenly, and the throne was inherited by the old emperor's nephew Chu Yuan. The old emperor suspected that the prince's death was related to Chu Yuan and his father (the old emperor's younger brother), but there was no evidence. The old emperor took Jiang Yue out of the cold palace, named her queen in the name of "bringing joy", gave her power, and hoped that she would use her forensic skills to secretly investigate the cause of the prince's death. Jiang Yue was forced to get involved in the palace struggle. On the one hand, she had to adapt to her status as a queen, and on the other hand, she had to investigate secretly.
