At his wedding, Mo Jing Qian discovers that the bride was not An Shi Hui who he was going to marry, but An Shi Ning, her twin sister. An Shi Hui had suddenly passed away months earlier. Under pressure from his parents, Mo Jing Qian is forced to accept An Shi Ning as his bride but plots a way to divorce her. While trying to set his plan in motion, he falls in love with her.

After the founding of the kingdom, Emperor Ancestor named eighteen meritorious officials as the "Dragon Guardians", whose title has been inherited for generations, with the mission of guarding the safety and security of the royal family. More than a hundred years later, the new emperor has been on the throne for quite some time, but because of the power struggle in the imperial court, he is always forced to languish in the pile of ugly girls, and the emperor has no choice but to run to the marketplace brothel "Zang Xiang Ge" to choose a concubine, but unexpectedly met with the evil forces of the jianghu - Dongfang Bu Ai