In his third year of opening a detective agency, Lin Chen took over a "spontaneous combustion case" and unexpectedly awakened the "causal deduction" golden finger - which can trace back the details of the case and predict the criminal's next move. At the crime scene, he met the sisters Su Qingyue, a forensic doctor, and Su Qingxue, a criminal police officer. One was cold and arrogant, with divine anatomy skills, while the other had explosive combat prowess and a sassy personality. As the investigation deepened, Lin Chen discovered that the case contained a conspiracy to tamper with memory, and hypocritical police officers and psychologically twisted masterminds emerged one after another. He used deductions to outwit his opponents and solved serial conspiracies against routines, but was betrayed and misunderstood by those he trusted. Surrounded by his confidante, Lin Chen not only wants to uncover the real murderer, but also breaks the chaotic cycle of cause and effect and uncovers the supernatural secrets deep in the city.
