When a law enforcer is deeply involved in the mystery of a crime, has he ever thought about what kind of situation he will face? When he is still an ignorant suspect, the justice machine has actually begun to act, with only one purpose, which is to bring him to justice. Justice and law show their powerful charm at this moment. It turns out that what we always respect is the system itself, but in the end, you just think too much... The story begins with a hit-and-run accident: a local prosecutor's life has changed dramatically because of his involvement in a hit-and-run case, and another man happened to be arrested for murder after being mistaken for the perpetrator... The young lawyer accidentally hit a pedestrian while driving drunk, but drove away. Innocent people were wrongly imprisoned. In the face of morality, the prosecutor finally chose to surrender, but later found that there was another hidden story in the incident. However, the development of things has gone beyond his control. He has been involved in murder cases again and again. How should he solve the many dangers?