Jeong Do-man is a low-ranking web traffic police officer whose propensity to do things "by the book" occasionally obtains him in trouble, such as when he pulls over his brand-new boss, recently set up authorities chief Lee Seung-man, and concerns him with a website traffic ticket. Though stunned and also irritated by the unanticipated penalty, the cops chief has larger troubles; the town of Sampo has been hit by a string of bank break-ins, as well as to guarantee the general public he decides to carry out a reasonable drill which will certainly show the police force's ability. Do-man is chosen to act out the part of the bank burglar, yet with his typical meticulous focus to detail he sets out to dedicate the best crime.