Yuan Cheng Zhi is the son of a general who has been killed by the emperor. He comes across a beautiful girl named Qing Qing, and they embark on exciting adventures together, with Yuan still bearing in mind his desire to avenge his father's death. On his journey, he befriends another girl, Jiu, and after they have formed a close relationship, she reveals her real identity as the royal princess, the daughter of the emperor who killed Yuan's father. (Source: DramaWiki) ~~ Adapted from the novel "Sword Stained With Royal Blood" by Louis Cha.