As the rifts in the Heavenly Way slowly widen, evil spirits creep into the human world. In the midst of ordinary city life is Jian Song, a young man who can see the halos of weapon spirits.
He tends a quiet blacksmith's shop in Beizhen's flower, bird, and fish market, forging weapons, collecting wandering souls, and refining weapon spirits. All he wants is to live peacefully in his little corner of the world.
He thought his skills were enough to keep those around him safe, until the first snow of winter, when Sister Zhao, who ran the flower shop and treated him like family, was controlled and transformed by Lie Chen, the leader of the evil spirits. Only then did Jian Song realize how insignificant his strength was against overwhelming power and a vast conspiracy. He couldn't hold on to the warmth of an ordinary life. All he could do was end the suffering of someone he once knew with his own hands.
The cold reality shattered his dream of keeping to himself. As the schemes of the Heavenly Way's upper echelons and an apocalyptic organization are gradually laid bare, the young man will eventually enter the fray with sword in hand and tread a path of blood and fire to break the deadlock.