under the strict guidance of guan lijie), four people graduated with the standards and joined the airport special police team. however, jingshan often faces zhang zhenhe (played by huang ziheng), the general inspector of the special police team. sheriff ma rongyi (played by yang ming) is well aware of their rift and is eased from time to time. jingshan accidentally met anna yu (played by tang luowen). the two are easy to fall in love and difficult to get along, but jingshan gradually develops a subtle feeling about her female partner kaiqing. everyone is full of joys and sorrows and separations while on duty, wandering around life and death, and gradually establishing their sense of mission as an airport special police! however, a huge crisis is approaching quietly, putting the team in an unprecedented dilemma...