Tarzan heads to Guatemala to look for his friend, D'Arnot and helps Major Matling search Mayan ruins for hidden jewels and an idol holding the formula for an explosive. Guatemalan police pursue Alice and Gordon assuming them as spies. Ula Vale as a mysterious figure is revealed in the final episode to be an undercover government operative.
Chapter 8:
While Tarzan and his friends see the precious document fall into treacherous rapids, faithful subjects of the Dead City vow to capture the desecrators who have taken the Goddess from the Temple...