In a modern city, firefighter Lu Yan was fighting a fire in a century-old building when he inhaled a strange golden smoke, and an eternal spiritual fire suddenly ignited in his body - it can burn evil spirits, purify filth, and illuminate the underworld. He quietly intervened in frequent supernatural incidents and transformed from the questioned "freak firefighter" into the chief combat force of the official Secret Service's "Fire Cleanup Team". As the investigation deepens, he discovers that every supernatural fire hides the mark of the spark that Lord Huodexing set before his death; and behind the arson case that year, there was actually a shocking conspiracy organized by the old heavenly ministry and colluded with the secret sects of the mortal world. The main plot revolves around tracing the origin of the spiritual fire, deciphering the life experience, and recasting the fire godhead. In the end, Lu Yan inherited the divine fire in his mortal body and regained the power of the fire in the three realms.
