During a hunting trip, large wolves attack and Asule briefly transforms into a powerful warrior, killing a wolf with one strike. He's in a coma for a month when a stranger appears, revealing that Asule inherited the sacred blood of his ancestors which is too powerful for a child. The stranger suppresses Asule's power stating he and Asule are somehow connected. Leopard General Tuoba chooses Asule to marry the Princess of the lower state of Xia. Asule takes an Eastlander's name, Lü Gui Chen, and travels to Xia Tang. En route, they are attacked by assassins from the Li Empire. (Source: frankly at MyDramaList)