When young Sienna Jenkins uses the secret Yin-Yang Revival Needles to heal others, she draws the greed of Malcolm Sheffield, the Imperial Preceptor, leading to the downfall of the Jenkins family. Separated from Chester Larson, the pair keeps two needle pouches as tokens of reunion. A decade later, the Emperor decrees a marriage between Sheffield’s daughter and Chester—but Sheffield schemes to force Sienna into the bride’s place.