Young policeman Yang Jiadong (Jing Bairan) arrived in the coastal city for the first time, and director of the City Construction Committee Tang Yujie (Zhang Yuwen) died. Yang Jiadong started investigating and found that the case of Tang Yujie’s fall was closely related to Jiang Zicheng (Qin Yi), who was very close to the Zijin Enterprise, and Ziyun’s partner Ayong (Chen Yuxi) disappeared a few years ago. During the investigation, Yang Jiadong was fired and persecuted. He fled to Hong Kong. By chance meeting with the daughter of the deceased, Xiaonuo (Ma Sichun), he was stunned, and continued his investigation with her help. However, he realized that he had fallen into a trap.