Sun An was originally a criminal police officer who was transferred from the front line due to psychological trauma. He accidentally traveled to a parallel world where ghosts were rampant. A corpse appears in a secret room, and the strange blood-eye pattern on the wall becomes the only clue. She is forced to be recalled to investigate. During the investigation, she found that she was being watched by countless pairs of eyes, the police station surveillance system was flashing, and her colleagues had strange looks in their eyes. What's even more horrifying is that the last scene the victim saw before her death was actually reflected in her pupils. As the investigation deepened, the task force named her as the number one suspect. It turns out that the mysterious organization hiding in the dark and mastering supernatural power planned this killing game with the secret room as the stage, with the purpose of hunting down those who can see through the truth. As a time traveler, Sun An will be hunted down by a mysterious organization once his identity is exposed. Her investigative judgment was also affected due to psychological trauma. Now she must use the system to find out the truth and get out of trouble before she is convicted as a murderer.