She is Ningchu, the princess of Huailiang Kingdom who is inexperienced in world affairs. I longed for the young man I had glimpsed when I was young. However, once the country was destroyed, I harbored hatred and became a brothel girl. The letter her mother gave her before she died, and the hatred of the Huailiang Kingdom was all borne by her alone. Later, she was redeemed by King Yu and became a maid in Prince Yu's palace. After secretly training her, she was sent to the prince as an informant. She looked for opportunities and was ready to take action, waiting for the opportunity to get close to the current emperor, her enemy, hoping to kill him with her own hands. On this road of revenge, she met the gentle and jade-like deposed prince Shen Che, the sinister and introverted Prince Chen Zhan, the sinister and split-personality Prince Yu Shen Yu, the sunny and kind Crown Prince Song Yin of Rounan, and the Major General Wei Chen whom she loved when she was a child.