The film mainly tells the story of Qi Jian, a photographer who suddenly received news of his wife Huang Zewen's death and was asked to go to the Cultural Relics Appraisal Center. However, at the Appraisal Center, a staff member who called himself Zhu Keren told him that his wife was a suspect of reselling cultural relics, and the whereabouts of the resold cultural relics were unknown. In the following days, Qi Jian encountered strange things one after another. In order to find out the cause of his wife's death, he decided to investigate the matter. What difficulties will Qi Jian encounter during the investigation?