As Asia's financial center, Hong Kong is known as the "safest city". Unexpectedly, the police station received an anonymous phone call claiming to have hijacked a front-line assault vehicle of the police force, five police officers and weapons and equipment inside it. This incident attracted great attention from the top management of the Hong Kong Police Force. It coincided with a trip abroad by the Commissioner (played by Wang Minde). At this time, the hawkish Deputy Director of Operations Li Wenbin (played by Leung Ka-fai) and the young Deputy Director of Management Liu Jie-fai (played by Kwok) were in charge of the case and named the operation "Chills", with Li Wenbin serving as the chief officer...