The Asian Hawk is back! This time he has a new job to do, because of which our hero comes to Madrid again. Some mysterious millionaire offers Hawk to take up the search for Nazi treasure, which is hidden deep in the African desert. He gives the key to the treasure, agrees to finance the expedition and sends with Hawk fellow traveler – a specialist in Africa Ada.During his stay in Madrid, Hawk meets a German girl Elsa, who is looking for her grandfather, who disappeared during the war in Africa. After a series of adventures, Elsa also joins the expedition.