Agile, youthful and sunny Zhong Aifang (played by Charlene Choi) finally became a police officer like her father, the hourly worker (played by Hui Shaoxiong). On her first day at work, she encountered a major case. In order to incriminate the gangster Tianye (played by Wong Jing), the serious crime team looked for the important witness Feiwei (played by Lam Suet), and Tianye also wanted to kill Feiwei to silence him. Aifang showed her edge for the first time, defeated Tianye's men and captured Feiwei. Feiwei made a request that as long as the police could protect his daughter Junjun (played by Li Manyun) who participated in the Huaxia Cup Youth Miss Beauty Pageant, he agreed to testify in court. The serious crime team police superintendent Lu Zhiang (played by Lu Yi) sent Aifang to mix into the beauty pageant team to secretly protect Junjun. At the same time, Lu Zhiang and the elite of the police force Yuan Zidan (played by Fan Shaohuang) and the tomboy Tiemali (played by Sandra Ng) also mixed into the TV station and moved with the camera. Tianye knew Junjun's life experience, so he sent a killer to attack her. All forces gathered here, and repeated competitions were inevitable...