Scarlet dust fell, civilization solidified, and the world became purgatory. The survivor Lin Nuo awakened the unique power of "purification" in despair. This power is the dawn in disaster, it can dispel pollution and heal pain, but it also makes him a treasure coveted by all parties. In this collapsed world, he is the final purifier and the target of public criticism. Faced with bloodthirsty monsters, unpredictable human hearts, and the buried secrets of the apocalypse, he must use this power to guard the remaining fire of humanity on the ruins of destruction and explore the glimmer of rebirth. This is a lonely road belonging to the purifier, and it is also an apocalyptic legend about protection and redemption.