The eldest princess Li Huaiyu was wronged and given poisoned wine, but was rescued by a kind person. When she woke up, she became the fourth lady of the Bai Yushi family.Li Huaiyu decided to use his new identity to seek justice for himself. His first enemy was the imperial master Jiang Xuanjin who gave him poisonous wine.Li Huaiyu took advantage of Jiang Xuanjin's weaknesses and successfully married into the Jiang family. She originally wanted to follow her own plan, but as she got along with Jiang Xuanjin, she gradually discovered that he was not as ruthless as she originally thought.He does not distinguish between right and wrong, but he is dedicated to court affairs and conscientious to his family, and his grievances seem to have hidden reasons.

Li Huaiyu assisted Jiang Xuanjin from the side, and the two worked together to solve multiple cases, restoring fairness and justice in the imperial examinations, and bringing the disaster relief bank case to light. The masterminds behind these two cases were the people who framed him.When Li Huaiyu thought that everything was settled and decided to let go of the past and start a new life with a new identity, the secret of his life experience was revealed and everyone was in an uproar.Jiang Xuanjin chose to believe Li Huaiyu, and the two teamed up with Li Yingwai to expose the enemy's conspiracy, and then retired to the countryside together.