In a world where two sacred headbands, "First" and "Second," have been passed down through the ages, those who wear the First are revered as gods. The only one who can challenge them is the wearer of the Second, but ironically, anyone in the world can challenge the Second. Young Ahie witnessed his father, once a wearer of the First, being beheaded by the challenger wearing the Second, known as "Justice." From that moment on, Ahie vowed to avenge his father's death by challenging the wearers of the First.