The Qingyang tribe attacks the Zhenyan tribe and Asule learns that his real father is Lü Song, the Chief of Qingyang Tribe. Though weak and sickly, he becomes the crown prince by virtue of being the youngest son. To protect the Zhenyan tribe, now slaves, he chooses to be their leader and lives among them. In order to survive, he is taught martial arts using a machete and is given two loyal guards. General Tuoba from Xia Tang State visits with a proposal that benefits both Qingyang and Xia Tang. (Source: frankly at MyDramaList)