Zhuo Qing, the Prime Minister's daughter, had her status as the legitimate daughter stolen from her at birth. When she learned the truth at fifteen, she began plotting her revenge.
The Crown Prince, Xu An, suffered from a strange illness and was on the verge of death.
The Emperor and Empress were frantic with worry. Whoever could save the Crown Prince would be richly rewarded.
Zhuo Qing, the Prime Minister's concubine-born daughter, volunteered to treat him. Her only condition was that she take her elder sister Zhuo Pinglan's place as Crown Princess.
The Crown Prince was the only prince of the Dayue Dynasty, so the Emperor and Empress readily agreed to anything she asked.
The Crown Prince made a full recovery, and the marriage meant to repay her deed went ahead smoothly.
Furious that her Crown Princess position had been snatched away, Zhuo Pinglan tried every means to frame her younger sister. In the end, she found evidence that her sister had once poisoned the Crown Prince and proved in front of everyone that the marriage meant to repay her had been a scheme Zhuo Qing had staged to become Crown Princess.
Zhuo Pinglan gloated, convinced she had finally brought her sister down. But the Crown Prince spoke calmly.
"I knew all along that Qing'er poisoned me. I was perfectly willing to accept it."
After all her scheming, Zhuo Pinglan went mad on the spot.
Theme: The flowers you plant with care may not bloom, while the willows planted by accident may grow thick.
