Cold case

Under the leadership of Luo Yingwei (played by Li Yuan), a "talkative female cadre", three young policewomen from the archives of the Pingling Public Security Bureau: "Gossip Queen" Cai Wenxin (played by Shi Shi), "Beautiful and Inspiring Sister" Xia Luoyang (played by Pu Tao), and "Silent Clerk" Feng Yi (played by Xu Yuan) formed a case-solving team with jaw-dropping situations. With the trust and help of Cai Wenxin's brother Cai Wenfei (played by Wang Yu), captain of the Criminal Police Brigade of the Pingling City Public Security Bureau, and other seniors, the team members overcame numerous difficulties, solved a series of cold cases, and destroyed the Pingling drug cartel. In the process, they understood the meaning of being police officers and eventually grew into excellent police officers.