She was supposed to be the supreme king of the demon world, but on the day she ascended the throne, she was stabbed through the heart by her beloved. When she came to this world, she became the bullied good-for-nothing third lady of the Duke's Palace. Her former timidity and cowardice were long gone, replaced by a cold, arrogant and arrogant figure. She threatened: "If heaven abandons me, it can also deceive me; if the world abandons me, the world will be killed; I must avenge my heart-breaking revenge!" However, when many mysteries are revealed; who has accepted whose calamity, and who has become whose obsession...