- **Surprise in the Deep Palace**: The noble concubine Su Wanru was banished to the cold palace due to the witchcraft case. She witnessed the tragic death of the mysterious palace maid on a rainy night, and unexpectedly discovered the secret room and jade tablet in the dry well of the cold palace.
- **The truth is revealed**: Through the patterns on the jade plaque, Wanru discovered that the case was related to the late Concubine Rong. The chance encounter with secret guard Xiao Jingming brought key clues and revealed the truth about Concubine Rong's case three years ago.
- **Undercurrent**: Wanru found evidence of collusion between the personal palace maid and Shu Fei, found key account books in the cold palace, and gradually pieced together Shu Fei's conspiracy to control the harem through the imperial hospital.
- **Jedi Strikes Back**: Wanru and Xiao Jingming teamed up to design the middle game, using the emperor's guilt for Concubine Rong to trigger a thorough investigation, and finally revealed Concubine Shu's crime during the confrontation in front of the emperor.
- **Secret love**: During the investigation process, Wanru and Xiao Jingming went from being suspicious of each other to trusting each other in life and death. The emotional turning point between the two in the cold palace Meilin became an important branch line.
Purpose: Women's awakening and self-salvation