Liu Nianchu, a secondary vocational school student in Tanggu No. 1 Vocational College, is recognized as an "all-rounder" on campus - she ranks first in academic performance, wins gold and silver in sports competitions, and has impressed her classmates and teachers with her ability in both civil and military fields. English teacher Wu especially values her and often praises her talent and potential. Few people know that this seemingly ordinary student also has amazing crime-solving abilities and has become a secret helper for the local criminal investigation team to solve the "fog of old cases".
Whenever dusty old cases stir up trouble again and difficult problems block the direction of investigation, Shen Yanzhou, the captain of the criminal investigation team, will lead the entire team and appear on time in Tanggu. Deputy captain Ye Shutong grasped the context of the case that was half sorted out. Investigators Gu Ye and Su Wan brought scattered clues from field visits. Forensic doctor Wen Shiyan held evidence samples left over from the old case. Trace examiner Lin Zhixu and electronic forensics expert Jiang Chi took the lead. With the technical problems to be solved, the intelligence officer Song Xingci who has sorted out the files, the recorder Xu Qingyan who has synchronized the information, and Zhou Yan who is ready for support, the group can always piece together the fragments of the old case in front of Liu Nianchu's desk.
From the mysterious cases that have been missing for many years in the fog to the key loopholes left in the files, Liu Nianchu can always break out of the conventional perspective and find breakthroughs in the fog by combining Shen Yanzhou's overall judgment, Wen Shiyan's forensic conclusions, and the investigation results of all aspects of the team. She worked side by side with the criminal investigation team, taking care of her studies on campus and the competition field, while following the team members to dig into the truth of old cases, so that the secrets that had been buried by time were finally revealed time and time again.
Purpose: Use young minds to solve crimes so that the truth will not be hidden