Against the background of the war in troubled times, Wei Ying, a down-and-out scholar, assisted the lord in his previous life. He used wisdom and strategy to teach the refugees to form grass-rope formations and use calculations to deduce the weather. However, the wealthy family whose wealth was cut off by him framed him for "hypocrisy and misleading the public", causing him to go to the execution platform. After rebirth, Wei Ying took her past life memories with her, determined to take revenge and change her destiny. However, he faced many difficulties. As a scholar, he lacked military force and faced difficulties in fighting among the princes for hegemony. At the same time, the betrayal and use of the wealthy family plunged him into a crisis of trust. The wealthy family also spread rumors, causing him to be misunderstood by everyone. The situation among the princes is tense, and he must assist the lord to strengthen his power within a limited time. Relying on the fatal secret of understanding the evil deeds of the wealthy family, Wei Ying joined hands with Ruan Shu, who was also reborn, to gradually reveal the true face of the wealthy family, break through crises one after another, seek revenge on the wealthy family, and finally turn the world around, but she also paid a heavy price in the process.