Approaching retirement age police vehicle sheriff Lin Guoquan (Simon Yam decoration) is responsible for the management of police vehicles, drivers daily attendance and repair things, between him and the good friend, Detective Inspector fat Wei Luo Wei (Suet Lam decoration), good apprentice Li Yuqin in daily life, but also frequent strange street crime. The toilet after case, the Mafia money dispute, egg tart shop in his case so that they are successful break made outstanding service. Because of the love, the love of criminal investigation Lin Guoquan chose to give up retreat behind the scenes. When he put down all the scruples, ambitious again, choose to return to the action group, under his influence, good apprentice officers driver Li Yuqin breakthrough demons, ideal practice, robbery shootout with bank case in performance, and the determination to move forward toward the direction of the flying tigers......