SWAT police officer Wu Qiang encounters a car accident and shooting on his way to his wedding, and his comrade Lu Ming is shot and killed by a robber. The wedding turns into a funeral, and Wu Qiang is in agony; Later, during his last escort mission as a SWAT police officer, Wu Qiang recognizes that the target of his escort is Cheng Hao, the robber who had escaped on the day of his wedding. Wu Qiang firmly believes that evil can never prevail over good; But at the same time, greater dangers intertwine and a shocking conspiracy by a criminal gang surfaces…...

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....