Zhao Song, the discarded daughter of a Duke, is sent to the palace as a sacrificial substitute for her sister. Armed with nothing but her lethal beauty and a mind for strategy, she begins a bloody ascent to the throne, capturing the heart of a cold King and manipulating the harem like a grandmaster of chess. Her goal is simple: total vengeance against the maternal family that betrayed her. But just as she prepares to crush her enemies and seize the crown, Zhao Song discovers that the seemingly innocent Empress is a far more dangerous predator than anyone ever imagined. In this shadow war, there is only room for one ruler.