Synopsis：Xiang Qian, Qin Feng, Guan Yue, and Ye Yu are four senior students at Haiyue Police Academy. Brought together by a misunderstanding, they initially can't stand each other, but through training and a simulated combat competition they gradually come to respect one another and ultimately win the championship together. In a real operation after officially joining the police force, they complete their transformation from cadets into qualified officers.