On a summer night 10 years ago, police officer Yuan Wenshan (played by Feng Shaofeng) received a robbery and murder case. During the gradual in-depth investigation, the suspects present that night surfaced one by one. However, the truth of the case is far from as simple as it seems. Three cases are happening in parallel, and the contest between interests and justice is intensifying. What are the people involved in it for? Is it a struggle between love and law, or is it driven by desire? When the case is getting closer, Yuan Wenshan finds an important clue that he has overlooked...