The Lost World

Tribune seeks refuge at the explorers' treehouse from Empress Centuria and her legion of Lizardmen. The reptilian soldier track him down at their haven and take him prisoner, along with Malone, Marguerite, and Roxton. The captives are taken to Centuria's city, where Malone--posing as Challenger--is ordered to make gunpowder for her troops while Roxton and Tribune are sent to the Gladiators' Arena.