Shen Shixi entered the palace to find out the truth behind her sister's murder. She stood out by growing high-yielding potatoes in the palace. She met Xu Murong and followed the clues of the Pei family's broken jade to find out the conspiracy between the Queen Mother and the Pei family. When Beisha invaded, she improved potato rations and offered strategies to defend Yanmen Pass, rising steadily. The Pei family colluded with foreign enemies and instigated Concubine Rong to poison her. She taught herself pharmacology to save herself. Faced with criticism from courtiers, she proved herself through her achievements in benefiting the people and successfully became a queen. The traitor party was destroyed and Beisha sued for peace. She cleared her sister's grievances, opened an agricultural school to benefit the people, and reunited with Li Yuanke for a lifetime.
