Xinghai City has frequently experienced "mirror anomalies" in recent years - ordinary people see a strange version of themselves in the mirror. For as long as three days or as long as a week, the parties concerned will encounter unexplainable and strange accidents. Three years ago, Lin Mo led the investigation into the "Mirror Murder Case". When the victim was found, his face completely overlapped with the reflection in the mirror but he was already dead. The case eventually became a mystery, and he resigned due to psychological trauma. Three years later, freelance writer Chen Ye's roommate became the latest victim. Before his disappearance, the roommate repeatedly mentioned "the person in the mirror is looking at me." In order to find out the truth, Chen Ye found the reclusive Lin Mo, and the two people with very different personalities were forced to join forces. As the investigation deepened, they discovered that the mirror incident was no accident, and involved secret experiments decades ago and consciousness transfer technology across time and space. Lin Mo's unsolved old case three years ago, the mysterious bronze mirror Chen Ye accidentally obtained, and the increasing number of victims in the city. All clues point to another world behind the "mirror". When reality and mirror images begin to intertwine, they must uncover this suspenseful mystery that spans time and space before they are replaced by their "other self."