Monsters have lived sided by side with humans since the beginning of time, and "Bureau of Special Resident Affairs" was created to facilitate communication between the species. However, the agency has deviated from that mission in recent years by implementing policies to keep monsters under close surveillance and limit their interactions with humans. New employee Lu Ji sympathizes with the monsters' struggles and their loss of habitats to the humans. He starts to question the agency's policies, which seem to mostly benefiting the humans. His conflicting feeling about his role as a facilitator intensifies when he discovers he may be part monster. Should he side with the monsters and fight back against the human's high-handed policies, or side with the humans and eliminate all that threatens human safety?