 A shipment of Vickers machine guns is stolen from a British warship in Bombasa Harbor, Africa, in 1914, and Denham (Louis Hayward) is assigned to track them down. He poses as a hunter and follows a trail that leads him to Cunningham (Michael Pate), a trader, who intends to sell the rifles to the Germans, and whose daughter, Jennifer (Veronica Hurst), Denham loves.