Police academy graduates Mo Li, Lin Huan and Jiang Lan are three good friends. Mo Li fell in love with Lin Huan, the daughter of the boss Lin Jue, and finally got married after many difficulties. However, Lin Huan died in a car accident on the eve of the wedding. Feeling guilty, Mo Li gave up being a policeman and joined Lin Jue's company to become Lin Jue's right-hand man in laundering his crimes. Lin Jue decided to hand over the inheritance rights to Mo Li. This aroused the indignation of Lin Jue's eldest son Lin Qing. Lin Qing took advantage of the period when his father lost his daughter to secretly retain and cultivate the remaining gangster forces, and tried his best to prevent Mo Li from inheriting the path. However, Jiang Lan, who successfully became a police officer after graduation, provided a lot of help to Mo Li. The girl Rui Rendong met by chance, and Mo Li were fatefully involved. As Lin Qing pressed for inheritance rights, the real cause of Lin Huan's death also emerged...