It is a dark comedy about two brothers, Sang-yun (Shin Hyoon-Joon)and Ha-yun (Bin Won), and their two friends, Jae Young (Jeong Jae-yeong) and Jung-woo (Shin Ha-gyoon). These four form a group of assassins, who have attracted the attention of a couple of pesky detectives, Sergeant Kim (Jung Gyu-soo) and Inspector Cho (Jeong Jin-yeong).