The National Agency for Combating Elementals (NACE) achieved a long-awaited victory against the most dangerous and ruthless spirit in history — Inferno. Yet, the spirit proved more cunning than expected: instead of perishing, it abandoned its physical form and escaped, gaining newfound freedom. Its next host became Niro Kasai — a gifted teenager with a tragic past and a passion for taekwondo. But the delicate balance of his life is shattered: within him now burns the immense power of Inferno, threatening to consume not just him but the entire world. Niro has become a ticking time bomb. Can he tame the flames that crave destruction, or will Inferno take full control, transforming the boy into a vessel of chaos?