The Master of the Holy Demon's sect returns from his blood ritual. He explains that his blood vessels were damaged by the fire in the alchemy furnace, making him age faster than the ordinary people. He tells the Master that he used to devote himself to the art of alchemy in the city of Danmeng back then, but that the people of the city treated him well. The Master tells him that the Ouyang family, which is one of the major families in the green region, recently became a laughingstock. The family wants to destroy the current head and his daughter, but they fear that attacking the family will cause too many losses, so they asked for the Master's help