Zhong Liwen (played by Wu Zhuoxi) and Wei Boqiao (played by Chen Jianfeng) were admitted to the police academy at the same time. One of them is impulsive and the other is stubborn. They are unlikely to be friends because they both dislike the instructor Li Wensheng (played by Miao Qiaowei). Wensheng is strict with the students, and the students complain. However, as everyone progresses, they gradually understand that Wensheng is doing it for their own good. Li Wen meets the female thief Ahua and develops a liking for her. Ahua's whole family is thieves, although he thinks it is wrong, he still finds it difficult to say it. Boqiao and his classmate Fiona (played by Fiona Sit) have feelings for each other, and Fiona's family is wealthy. Boqiao's self-esteem makes the relationship between the two hot and cold. At this time, Boqiao discovered that Wensheng was actually his biological father, the one who abandoned his mother and son 20 years ago, which was a great blow. These young people have to endure the test of life in order to graduate smoothly in the police academy and on the road of life.