4 years after the events of Garibong district round up operation, Geumcheon Police’s Major Crimes Unit is given a mission to repatriate a fugitive who fled to Vietnam. Beast cop Ma Seok-do (Don LEE) and Capt. Jeon Il-man (CHOI Guy-hwa) intuitively realize that there’s something wrong with the suspect’s willingness to turn himself in and uncover crimes committed by a terrifying killer named Kang Hae-sang (SON Sukku). Ma and his unit begin their investigation across two countries and follow the bloody breadcrumbs left behind by Kang… No borders in catching the bad! Another exciting and tension-filled round-up!