The main plot of this drama is about a murder case solved by policewoman Ran Dongdong and members of the special case team, and the emotional life of the heroine Ran Dongdong as the secondary plot. The two plots are intertwined, successfully creating the image of a policewoman who pursues the truth and punishes evil and promotes good. In the process of solving the case, she overcame three difficulties, including the confusing case, the psychological interference of whether her husband betrayed her, and the mild depression caused by work pressure, and finally brought the criminal to justice. Adapted from the novel of the same name by writer Dongxi.