On a rainy night, the Hong Kong Forensic Medicine Center was robbed by a group of well-trained gangsters. The visitor held two forensic doctors, Chen Jiahao (played by Zhang Jiahui) and Qiao Lin (played by Yang Zi), and forced them to search for a special corpse and find a bullet inside the body. During the autopsy process, the forensic doctor discovered that the bullet was related to a gangster shopping spree...