A series of stories about the Binjiang City Special Police Detachment "Hummingbird Squad" fighting illegal crimes and protecting the peace of the people. The "Hummingbird Squad" is a group of elite police officers with modern law enforcement awareness and capabilities. They are full of humanity and faith. They are in the community, on the streets, in arrests, and on the front line of law enforcement where there is no smoke but sacrifice. It is their heroic and busy figure that is the "visible sense of security" for the people.