Zu Huaixuan, a child raised in an orphanage, signs a contract with Yi Yang Shigong to travel into the underworld and to become a Bai Wuchang (a good spirit cop) in the god’s army in order to save a teacher who...

In a world where certain humans command mighty supernatural duos called Daemons, it is the birthright of "the children who sunder day and night" - twins Yuru and Asa - to rule over these powerful entities...