Wealthy individuals in Longcheng City have been dying one after another, and a dark shadow has been found at each crime scene. Fu Yaoyao, the captain of Longcheng City's criminal investigation team, and Jiang Zu'an, the deputy captain, quickly launched an investigation. With the full cooperation of the young chemist Zhong Shenhao, they exposed this shadow in broad daylight, leaving it with nowhere to hide. But little did they know, as one wave subsided, another arose.