Going by the Book

A string of bank robberies puts the public in a panic and they demand action from the newly appointed police chief to crack down on the perpetrators. In order to appease the residents of the city and carry out his own ambitions, the police chief appoints naive traffic cop Jung Do Man to infiltrate the world of the robbers.
(Source: KMDb)
~~ Adapted from the novel "Playtime Is Never Over" (遊びの時間は終らない) by Kunihiko Miyakoi (都井邦彦).