Jeong Do-man is a low-ranking web traffic police whose tendency to do things "by the book" in some cases gets him in trouble, such as when he pulls over his brand-new boss, freshly instated police chief Lee Seung-man, and problems him with a website traffic ticket. Though surprised and irritated by the unexpected fine, the police chief has bigger issues; the community of Sampo has been struck by a string of financial institution robberies, as well as to reassure the general public he decides to accomplish a realistic drill which will demonstrate the law enforcement agency's capability. Do-man is selected to act out the part of the bank burglar, yet with his common meticulous attention to information he sets out to dedicate the excellent crime.