Mu Wan was an inconspicuous princess in Yongzheng's palace. She accidentally met Yongzheng, who was the prince at that time. Just as the Nine Kings were seizing the throne, Mu Wan and Yin Shen advanced and retreated together, and gained love at this time. Soon, Mu Wan gave birth to Hongli and was officially canonized as Concubine Xi. At that time, the harem was divided into three factions, namely the queen, concubine Hua and concubine Xi. Concubine Hua and Concubine Xi have been good sisters since the palace. The queen tried to murder the then-concubine in order to secure her throne, and even killed Concubine Hua's son, which caused a lot of complaints and even led to a separate court against the queen. Mu Wan was safe and sound under Yin Shen's protection, and soon she was promoted to a noble concubine. Since then, Yongzheng's harem has been in vain, and the love between Mu Wan and Yin Shen has become a good story at that time...