All of humanity is terrified. Humans without any abnormalities suddenly burn and turn into "flame-man", a monster that manipulates flames, and do everything they can to destroy people. The special fire brigade that stood up to the horror of flames is tasked with solving the mystery of this phenomenon and saving humanity! For some reason, the new member, Morira, who is called a "devil", aims to be a "hero" and, together with his companions, devotes himself to fighting the "flame-man" every day! !