The four brothers of the Niu family, a criminal underworld gang, have been entrenched in Hedong County for many years, and the people have complained but dare not speak out.At this time, Zheng Guohua convened a group of outstanding front-line police teams such as Li Xiangdong, Zhang Junwu, and Du Xianfeng to form a task force, which eventually wiped out the Niu family criminal gang and gave the people of Hedong County a pure land to live and work in peace and contentment.