在张兰队长的带领下，一支小型应急小组奋战在前线打击恐怖主义，维护城市的和平与秩序，最终成长为特战队的优秀成员。
A small response team under the leadership of captain Zhang Lan fight terrorism on the frontlines to maintain peace and order in the city and eventually grow into outstanding members of the special task force.
Three martial arts students who have their respective specialities are recruited by Zhang Lan to join the police force. Xin Xiao Jing is good at fighting, Cheng Tang is clever and Bai Daqing (Yang Shan) is a parkour hobbyist. For their mission, they are sent to infiltrate a criminal organization to carry out secret arrests. With the students as its core force, the police form a rapid response team under the guidance of psychologist Chen Cheng who has tailor-made a training from hell for the newcomers to rid them of their bad habits and instil discipline. In the process, Xin Xiao Jing and his teammates grow into better individuals who always adhere to their calling to serve the people.
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