Four years after the Garibong district round up operation, the Major Crimes Unit of Geumcheon Police is tasked with repatriating a fugitive who fled to Vietnam. As they delve deeper, they uncover a web of crimes committed by a ruthless killer, Kang Hae-sang, and embark on a transnational investigation to bring him to justice.

The Roundup
In a thrilling investigation, a detective tracks down a crucial clue to a foreign land, only to uncover a chilling pattern of murders targeting unsuspecting tourists, and a merciless assassin with a troubled history.