I am an undercover (movie version)

The film tells the story of anti-pocket-pocket police officer Huo Tao who accepts an organizational mission. After rigorous training and an in-depth background investigation of the criminal group, he pretends to be among the pickpockets. After establishing a credible identity, he infiltrates the group. He battles wits and courage with Mr. Bei, and tests each other with Mr. Bei's disguised Xiao Fei. Finally, in close cooperation with the director Situ Qiang, after several twists and turns, he gradually disintegrates the theft gang and tells the story of all kinds of police and gangsters.