There are various "yin people" hidden in the Northeast - those who raise fox fairies, those who protect the family, shamans, and those who dance with great gods. They each have their own unique skills, but they don't communicate with each other. The protagonist's job is to introduce these "yin people" to evil people, and people in the world call them "Guandong recruits yin people". Each major case is based on real supernatural rumors, records of immortals, and shaman legends among Northeastern folk, and has been adapted and processed.
