Her childhood sweetheart boyfriend died in a car accident to protect her, but her boyfriend's sacrifice still failed to save her life. Once she traveled through time, she was a woman with fireworks? The secret guard of the palace? Or is it the daughter of his mentor that the emperor misses so much? From the initial resignation to the cautious resistance later, your persistence may not bring about my dependence on life and death. What she wants is not a powerful position that dominates the world, nor endless glory and wealth, but a primitive simplicity. A drunken murmur made her feel pity for the prince, and the words "I will not let you down, I will not let you down" made her feel guilty towards the emperor. Which of the two can walk into her heart? How should she choose between them? Change my heart for yours, and we will know each other deeply and remember each other deeply.