Former criminal investigation consultant Lu Shi, forensic engineer Su Rui, and information consultant Chen Ye form an unbeatable trio. Reunited at a mirror-related case in an art museum, they investigate the “Phantom Hand Serial Cases,” which span more than ten years. They solve the campus cross-shaped wound case and the dye factory skeleton case, reopen the old July 19 case to clear the innocent, and finally capture the real culprit, Gao Ming, at a charity gala. There is no romance; the story focuses on solving cases. At the end, the trio takes on a new assignment, and the central mystery is resolved.