Hakin, an undercover police officer, has long infiltrated the Harimau Merah gang. Although he wishes to end his mission, Inspector Nazri urges him to continue in order to combat crime. Conflict arises when Bos, the leader of Harimau Merah, is murdered by his brother, AhB, who aspires to become the new leader. Hakin investigates AhB's operations, including the brutal murder of Uncle Hazim and the smuggling of drugs using foreign migrants.
