During ancient China's Sung Dynasty, chaos erupted due to the Jin Kang Rebellion. Fearing impending destruction, Concubine Liu tearfully entrusted her daughter, Princess Yi Fu, to a commoner, Tang Hui, who fled with the princess to the south, leaving her whereabouts unknown.
Jump ahead ten years, and the Tang dynasty has regained power. All exiled family members are urged to return home, but Zi Li is content with her life. She knows that returning home means sacrificing her love since a princess cannot court a peasant. Additionally, romantic relationships between princesses and palace warriors are shunned. Still, Zhong Lu, a famed warrior tasked with finding and restoring Princess Yi Fu to the throne, is compelled by an unrelenting desire.