Sichuan female police officer Zheng Dajie (played by Cheng Yuling) is responsible for going to Hong Kong to capture the fleeing suspects and has to cooperate with the Hong Kong police. Sergeant Wu Weiguo (played by Tony Leung) is responsible for receiving and cooperating in the investigation. He is confused by the innocent and simple Zheng Dajie and her assistant Asheng (played by Zhang Jianting) who are in Hong Kong for the first time. Due to regional cultural differences, Zheng Dajie and Wu Weiguo have constant friction and conflicts, which have given the suspects opportunities to escape many times. Because she was attacked by the suspect in the hotel, the inspector arranged for Zheng Dajie to live with Wu Weiguo. Wu Weiguo's father was the platoon leader of the 72nd Division of the Kuomintang Army. Due to different beliefs, Zheng Dajie and Wu's father were incompatible as soon as she arrived home. A series of hilarious confrontations unfolded, and the wonderful thing is that the relationship between Zheng Dajie and Wu Weiguo is also slowly changing...