A famous scientist, Professor Hargraves (James Durkin), and his daughter travel to Indochina to find an ancient ivory disc that has the formula for a deadly gas engraved on it. Dr. Barshan (John Davidson) his assistant Wang (Frank Lackteen) and his henchmen are also after the sacred formula and will stop at nothing to obtain it. Professor Hargraves’ daughter, Pauline (Evalyn Knapp), and flight-engineer Robert Ward (Craig Reynolds) do their best to protect Hargraves from the band of villains. The first great sound serial with compelling acting, good plots and cliff-hanger action! Ancient technology meets cliff-hanger serial!
