In her previous life, she was the empress of the underworld. She exhausted her cultivation to save the emperor of the world, and was eventually abandoned by him on the banks of the Wangchuan River. When he was reborn as an emperor and still a down-and-out prince, Ming Yexue took him as a servant and humiliated him in every possible way. But when the enemy army besieged the city, the young man she thought would always be cowardly stood alone in front of the city gate: "For you, I am willing to be the enemy of the world."