At the end of the Northern Song Dynasty, Fang La, the leader of Mingjiao, was defeated and killed. His youngest son Fang Mian was rescued by his uncle Fang Qifu and fled to the Kingdom of Jin. After the Jingkang Incident, Fang Mian met Roufu Diji, who looked exactly like his sister Fang Ru, in Huining Mansion. In order to save Roufu who committed suicide by jumping into the river, Fang Mian drowned and fell into a coma. When he woke up, he found that he had become Roufu. In order to avenge the Zhao and Song Empire, he (she) embarked on the road back south involuntarily.