A traumatized young man with physical abnormalities is forced to join a mysterious bureau to confront a disaster spreading across the earth caused by an unknown creature. He embarks on an adventure uncovering mysteries about his life.

In the near future,a disaster triggered by an unknown creature is spreading across the earth. Ma Shan, an traumatized young man, who is discriminated by people for his physical abnormality, is forced to join the mysterious 749 Bureau to confront the crisis. The young man embarks on an adventure uncovering the mystery of his life.