Lin Mo was accidentally bound to the crime deduction system. With skills such as micro-expression observation and criminal psychological profiling, Lin Mo emerged from the role of a murderer. He was accidentally involved in the "7.19 Case" and unveiled the mystery of the transnational criminal organization "Shadow Apprentice". He has gone through life-and-death pursuits, transnational lurking, and joined forces with the police to work step by step in a dual-line game of light and darkness. He vowed to destroy the "Shadow Apprentice" and reveal the truth about his life experience and the fire in his childhood.