Heavy are the shoulders that bear the burden of a household. To keep his waning clan afloat, leader Mujin Baek has no choice but to leave his homeland and venture out into the martial arts realm. When he passes the entrance exam of the Northern Sky Union with flying colors—leaving behind one unconscious opponent in the process—Mujin soon finds that the realm is not the noble place he once envisioned. With his powerful frost-style qi, however, he sets out to make a chilling mark amidst the fiery maelstrom engulfing the realm.