Two passengers of a smuggler’s boat manage to escape when the navy patrol captures the boat. They are Darmojo and his sister, Retno. Then Darmojo contacts Kouw Ling, the smuggler boss, while Retno is told to reach the navy patrol. Apparently, Darmojo wants to ensnare Kouw Ling's gang. Finally, the navy patrol can arrest the whole crime gang.
Jos Sudarso is the naval hero during the war for West Papua (currently known as Irian Jaya/Papua) in 1962.
Meanwhile, R. Iskak is the father of Indriati Iskak (Tiga Dara), and grandfather of Reynaldi Iskak, who was deported because of his Australian citizenship in 1994.