Persistent Consort(From Consort to Queen)

Fei Shu, princess of Shengxin kingdom, given to the king of Son Hui kingdom, Wei Dong Song as a consort to seal a peace treaty between the two nations.
Wei Dong Song takes a liking to her making her his favorite. She is then exposed to schemes initiated by the other consorts and Queen. She becomes an isolated consort when she is accused of trying to poison the Crown Prince.
But her determination to live and rule elevates her from the Cold palace to being the Queen to rule alongside the king and making several decisions bringing peace to the two nations at war.