The story takes place in Linjiang City on the southern coast. This city has both a prosperous business district and old alleys. It is calm on the surface, but in fact there is an undercurrent. In the city, there are not only the secret transactions of the rich and powerful, but also the survival struggles of ordinary people in the city. There are also abandoned factories, century-old orphanages and other places that carry the memory of the city. These places often become hotbeds of crime. The police system has a special case team that is responsible for major and difficult cases, and Su Yan and Lu Chen's team is one of them. The team members have their own strengths - skilled Internet police officers, experienced forensic doctors, and criminal police officers who are good at interrogation, forming an efficient and collaborative case-solving group.
