Under the palace walls of the Dayong Dynasty, there are two dust-covered murder cases: the miracle doctor Xin Yi was sentenced to death for discovering the queen's secret, and the knight Yan Jueming died protecting his daughter. The twin girls were scattered in the world, and the other was raised in the prince's mansion.
A few years later, the adopted daughter of the Hou family, Jiang Wanhe (Yan Cihua), married the Prime Minister Pei Siheng, but she fell off a cliff and died while defending the princess from an assassination attempt.
Yan Ciying, the bandit leader of Baiyun Mountain, broke into the Prime Minister's Mansion with an anonymous letter - she returned under the identity of her sister, and wanted to find out the cause of her parents' death, and also to tear apart the mysterious obstacles in the capital: the death order from the Zhenguo Palace, the twins contracted by the Queen, the hidden layout of Concubine Chen, and the seemingly indifferent husband in the Prime Minister's Mansion. Is he an enemy or a friend?
She is highly skilled in martial arts, and he dominates the government and the public. When the fake lady meets the real plotter, the "dead soul" at the bottom of the cliff remains, and the secrets of the palace wall are gradually revealed. The revenge chess game between the two sisters, from under the crabapple tree of the Prime Minister's Mansion, to the palace compound step by step
