It is a TV series with the theme of public security law enforcement, starring Wu Xiubo, Wang Ji and Tao Zeru. This is a contest between the police of the Border Guard Corps and the cunning and ferocious snakehead. It shows the process of the "big sister" of the gang from prosperity to destruction, tells the tortuous and tragic fate of smugglers, and interprets the "smuggling case" that shocked the world.