When second-tier actress Su Wan accepted the role of the second female lead in the suspense film "Crime in the Mirror", she thought it was an opportunity to turn her career around, but she was unexpectedly involved in a series of strange events - Lin Mo, a stand-in who looked similar to her, mysteriously disappeared on the set, leaving only a blood-stained prop dagger; "accidents" occurred frequently during filming: wires broke, sets collapsed, script lines were inexplicably tampered with, and even a dark shadow flashed in the mirror in the dressing room late at night. Everyone thought the crew was haunted, but Su Wan discovered that the missing double left a series of encrypted diaries on the set, and the lines pointed to a fatal accident in another movie three years ago, and the victim that year was the director of "Crime in the Mirror." As Su Wan investigates further, she discovers that she and her double not only have a similar appearance, but also have a blood relationship that has been deliberately concealed. Everyone in the crew is wearing a mask: the seemingly gentle director hides his obsession with revenge, the male protagonist who takes special care of her is actually an insider of the accident, and even her most trusted agent is secretly destroying evidence. When Su Wan gradually pieced together the truth, she realized that she had become the murderer's next target, and the real "phantom" was hiding in the shadows that the camera could not capture.
