Xuan, Mo, Tian, Qing, and Nanmen are families who make a living by chasing evil. Each family has its own unique skills to catch the murderer, and they cooperate to pursue the murderer. The five major families have made a contract with the Xianmen family, and they are responsible for chasing the murderer for the murder caused by the living person. Together with the Xianmen family, we can keep the peace of the world, and this has been the case for thousands of years.
Purpose: Although everyone has strengths, they must also rely on and help each other to coexist in the world.