Trainee forensic doctor Lin Wan has a super memory that can accurately reconstruct the scene of the crime. On the first day of joining the job, he encountered a difficult serial murder case. The cold-blooded criminal police captain Lu Shiyan was initially dismissive of the newcomer, but after Lin Wan used her memory details to find key clues, he became impressed with her. The two formed a partnership and solved several seemingly unrelated murders one after another, only to discover that mysterious symbols were left on the bodies of the deceased.
The highly intelligent killer Chen Mo disguised himself as an ordinary person and constantly provoked the police, even leaving clues to Lin Wan at the scene. As the investigation deepens, Lin Wan not only has to fight against the killer's psychological offensive, but also faces the shadow deep in his own memory. When the truth gradually emerged, she discovered that she had already been one of the targets in this murder-hunting game.
