On the basis of public security files a true story, the police have to peel the truth, with the criminal open Zhiyong. The public security system. The monitoring system of grand nets above and snares below like -- "Skynet" project. In Du director of the lead, the public security police have express a different style of their own: selfless Yan Li, Xia Fan, warm bright deep wisdom of Xu Lei, humorous Zhou Wei, their firm faith, the analysis detected a whirling, suspense after another major.