Min-jae who is a cop from generation to generation has been gotten to investigate Kang-yoon covertly, who is the ace group leader of examination team. Min-jae is appointed as the member of Kang-yoon's team. Min-jae has belief of "If the authorities do something unlawful even it has actually been taken place throughout the process of investigation, he is likewise a criminal." But while Min-jae investigates Kang-yoon, he starts to look like Kang-yoon that has idea of "The chase of crime need to be warranted even it's prohibited." Will Min-jae have the ability to remove his exclusive objective as well as apprehension Kang-yoon that he counts on as well as appreciates?