A comedy crime investigation drama depicting the story of the nation’s lowest-ranking homicide squad and the best elite homicide squad leader meeting to become the strongest team. Dongbang Yoo Bin is the tall, intelligent and athletic head of Songwon Police Station’s homicide squad. He was offered a permanent professorship at a famous overseas university, but he suddenly came to Korea and volunteered to become the head of the Songwon Police Station’s homicide squad Unit 2, which ranked last in the country in terms of arrest rate.