Changes in a poor family: Lin Mingyuan, the imperial censor, was convicted of impeaching a eunuch. His daughter Lin Shuyue witnessed the downfall of her family and decided to take revenge as a man by becoming an official. She took part in the imperial examination in the name of her brother and hid mysteries in her decision-making.
- Game in front of the palace: When facing the emperor, Pei Jiuzhang, the son of the right prime minister, attacked him. Lin Shuyue used an allusion from "Han Feizi" to resolve the crisis, but she realized that her identity might be exposed because of the hosta in Pei Jiuzhang's hand.
Undercurrents are surging: The new Jinshi is involved in the old case of Yushitai, Lin Shuyue discovers clues about the secret box left by her father, and Pei Jiuzhang's attitude of being both an enemy and a friend makes the situation even more confusing.
A battle of wits with powerful officials: Faced with the temptation of his enemy Yu Chaoen, Lin Shuyue responded with "Salt and Iron Theory", but when secretly investigating the household department's deficit, she discovered that Pei Jiuzhang actually had evidence that she was disguised as a man.
