History undergraduate student Meng Yuan time-travels into a noble lady of the Lanling Meng clan. Right at the start, she is bound to a capture system task: conquer Xie Hui, the notorious mad tyrant in historical records, and ensure the people of the great Zhao live in peace and work happily. Yet when she questions the truth behind the system, she discovers that this time-travel and quest is merely a grand game played by a mastermind behind the scenes. The white moonlight hangs high in the emperor's heart, the mad dog bows its head, and a conquest gambled with life ultimately becomes mutual redemption.