The storyline follows the redemption of Yona, the princess that is only to the kingdom of Kouka. Yona lives the carefree life of a princess in Hiryuu fortress, shielded by her bodyguard and youth pal Son Hak, and being sheltered by her pacifist dad, King Il. Within a party her other childhood friend and love interest Soowon comes to pay her homage. Meaning to tell her daddy that she cannot forget her love for Soowon, she sees the chambers and witnesses of King Il him being killed by Soowon, who discloses he will now correctly rule Kouka. Hak intercedes and saves Yona and they escape in the fortress to the birthplace of Hak, the Village of Wind. Beneath the proposition of the grandpa Son Mundok of Hak, Hak and Yona hunt for an oracle named Iksu. Iksu tells them the legend of the four dragons who unified the kingdom, as well as the very first king of Kouka, Hiryuu. Hak and Yona, joined by Iksu's helper Yun, start a journey to locate the mythical dragons that are reincarnated so that you can live and save the Kingdom of Kouka.