Our intrepid heroes one again face the life-threatening pitfalls as they travel to the darkest parts of uncharted jungle. Will they find the Black Diamond of Ix before the insidious Captain Torlock and his army of mecha-gorillas? What horrific booby traps await everyone inside King Uxshal-Uxmal's temple of blood? Will the sun disc amulet provide protection against the great serpent of Ged, as the sacred scrolls foretold? Or were the scrolls mistranslated by Professor Winthorpe on purpose? One thing is certain; time is running out!