Liu Nianchu, a secondary vocational student in Tanggu Vocational College, has never been an "ordinary existence" on campus - her grades are at the forefront, she has repeatedly won first prizes in sports competitions, and her qualities of both civil and military skills have always made her classmates and teachers look up to her. Teacher Wu, an English teacher, paid special attention to her and was often amazed by her talent. Few people know that this seemingly ordinary student also hides an amazing ability to solve crimes and has become the tacit "secret helper" of the local criminal police team.
Whenever the lights at the end of the alley are delayed and difficult cases come one after another, the captain of the criminal police team Lu Chenyuan will come to the door with his team members: deputy captain Su Yan is holding the evidence to be analyzed, investigator Cheng Ye is carrying field records, and technical officer Colin Zhixia is carrying uncompleted cases. Reporting traces of the investigation, intelligence agent Jiang Xunze holds a half-sorted network of clues, plus Xu Qinghe who is responsible for records and archiving, Gu Yan who supports field work, and Wen Xu who is good at psychological profiling, the group of people will always show up at Tanggu Vocational College on time.
From bizarre disappearances at the end of the alley to anonymous clues involving old cases, Liu Nianchu is always able to use his unique perspective to break through the fog within the police investigation framework. Side by side with the criminal police team led by Lu Chenyuan, under the lights that are still on, he pulls the hidden truth out of the darkness step by step, so that every unsolved case has its answer.
Purpose: Use youthful sharp eyes to break through the fog and find the truth of the case