On New year's Eve, the ghost of death, under the cover of fireworks, fired large-scale long-range guns at a building in the city center and other revelers upstairs, followed by an explosion in the room of the building where bullets were fired. There are a large number of victims in this mysterious case, leaving few clues. The keen judgment of Elinor, a young local policewoman, attracted the attention of the FBI director in charge of investigating the case, and the two joined hands to approach the cold, dangerous and astonishing truth.