Zhao Li, a police academy graduate, dreams of joining Guangshan City’s Special Police Unit. But after failing to meet the requirements in several areas, he is disqualified and has no choice but to join Denan Police Station of the Guangshan Public Security Bureau. Denan may be an ordinary township station, but it is full of hidden talent. From Wu, the incorruptible station chief, to Brother Jian, the veteran criminal investigator who has solved countless cases, and Brother Fei, an elite special forces operative, how will they help Zhao Li grow? What trials and dangers will rookie officer Zhao Li face, and how will he give meaning to his years in police blue?!