When Ji Yao, a modern cultural relic restorer, was working overtime to restore a Song Dynasty hosta in the Forbidden City, she accidentally cut her finger due to excessive fatigue. Blood seeped into the hosta, and her vision went dark. She traveled to the reign of Renzong in the Northern Song Dynasty.
- When she woke up, she found that she was the daughter of Ji Wenhan, a sixth-grade official who had her house confiscated. She was being escorted to Jiaofangsi. She used modern historical knowledge to identify Fanlou and Yujie passing by.
- In the Jiaofang Department, Ji Yao was punished as a rough maid because she was unwilling to submit to the powerful. She secretly observed the environment and used her chemical knowledge to make simple soap to please the steward.
