This adventure is taken from the popular British comic strip by Norman Pett that ran between 1932 until 1963. Jane (Kirsten Hughes) and her companion Jungle Jack Buck (Sam Jones) travel with a team of British adventurers to Africa and the mythical Lost City. Their mission is to find the fortune in diamonds before they fall into the hands of the Nazis, led by Lola Pagnola (Maud Adams). Also with Jane is the Colonel (Robin Bailey), a proper gentleman who is reminded of his "club" when he enters a centuries-old underground tomb.