Yu Zui

A group of young students at the Police Academy gets into a fight at a local restaurant and are at risk to be expelled from the profession. Xu Pingqiu, a highly respected figure in the industry, offers them a second chance. If they are able to succeed with his training, they are able to become certified police officers and their past crimes will be erased. However, the training is very atypical. The students a dropped in the middle of an unfamiliar city with nothing other than a cellphone and bracelet, and they have to survive forty days. Through various methods, Yu Zui finds and gathers his team mates. In the midst of chaos, one of the students, Shu Biao disappears. Yu Zui finds and mistakenly kills the person who kidnapped Shu Biao. After he was imprisoned, Yu Zui discovers that he was being deceived. There, he becomes good friends with his fellow inmate, Fu Guosheng, whose actual identity is the leader of a Drug Trafficking ringleader. He becomes an undercover cop to get closer to Fu Guosheng, who later sent him to spy on Zheng Chao. Yu Zui wants to make use of the distrust between Fu Guosheng and Zheng Chao to eliminate the latter, while Zheng Chao wants to get rid of Yu Zui.

Under Yu Zui's instigation, Zheng Chao betrays Fu Guosheng and established his own drug ring; causing him to be estranged from his former boss. Zheng Chao was later caught, and Yu Zui replaces Zheng Chao as the leader of the criminal organization. His rise to position raises Fu Guosheng's suspicion, who sends Si Hai to test him. Yu Zui discovers Fu Guosheng's plan in time, and gradually gains the latter's trust. Lin Jingyu also joins Yu Zui in his undercover mission and together the two of them tries to crack down on Fu Guosheng's crimes. At the end of the season, Fu Guosheng was arrested with the help of an unexpected person and Yu Zui rejoins his team mates at the Police Academy. However, he realizes that An Jialu is at the hands of Fu Guosheng's subordinates. Together, the team sets out to rescue An Jialu.