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In order to find out the whereabouts of his father's mysterious death and mother's disappearance, Song Jingnian was admitted to the police academy and inherited his parents' mantle. However, she has been a police officer for many years, but she is still unable to find out the reasons behind her father's death, and the whereabouts of her mother's disappearance have also been to no avail. When she was desperate, she encountered a cheating system. The system provided her with clues one after another, and she helped the system find out the truth of each case. After possessing the golden finger, Song Jingnian's reasoning ability also improved in each case, and he was getting closer and closer to the truth of his parents' cases...