This series tells about the ups and downs of the Great Sheng Kingdom from its turbulence to prosperity under the regency of Helan Mingyu, the Empress Dowager Xianzhen.

Princess Helan Mingyu (Zhao Yingzi) is a carefree, honest, bright but naive young lady who becomes acquainted with the 9th Prince Xiao Chengxu (Cheng Yi) by chance, in which the two get along well and eventually develop feelings for each other.

Prince Xiao Chengxu, repeatedly, made military exploits to help his brother becomes the emperor and establish the Great Sheng Kingdom.

However, fate turns against the couple, since his only real younger brother, Xiao Chengxuan's life depends on Princess Mingyu's hand.

For the sake of the Great Sheng kingdom's future, Grand Empress Dowager Mingyu, once again, must forget her needs and accompany her only living grandson to the throne.