一名警方特勤人员韩啸在一个涉黑集团做卧底，集团元老斩崩刀绑架富二代招来特警队围剿，以斩崩刀为首的劫匪皆被击毙。韩啸死里逃生引起魏哥怀疑，魏哥将韩啸抓来进行严刑拷问，韩啸发挥影帝演技和聪明才智与魏哥博弈，努力洗掉嫌疑，获得魏哥信任，继续卧底涉黑集团……...

Due to the needs of the task, three young martial arts school students- Xin Xiaojing, who is good at fighting, Cheng Tang, who is smart, and Bai Daqing, who loves parkour, are liked by Captain Zhang Lan and get recruited into the police force. Three of them sneak into the criminal's lair and carry out secret arrest. All team members have withstood all kinds of tests from the outside and the inside, and become excellent policemen....