During the Renzong period of the Northern Song Dynasty, the imperial court was turbulent and unstable. Twenty years ago, a son-changing incident made the emperor's life experience confusing.
The princess who lives among the people returns to the palace, triggering a turbulent royal undercurrent and the mystery of her life.
Xiao Jinhan, who was living among the people, came to Tubo because his adoptive parents were doing business, but he was thinking about his childhood sweetheart He Chong. Xiao Jinhan returned to the Central Plains for a three-year engagement, but He Chong had already married someone else. The general Di Qing was very kind to her and gradually moved her. She also fell in love with Di Qing, but the relationship between the two had twists and turns and finally failed to work out.