The object containing the eye is the Ultimate Weapon which transforms into a sword and Sandra attacks Cobra. She is too powerful and Cobra calls Lady to get information about the Ultimate Weapon from Mars Ancient History texts, however the essential 3rd volume was supposedly destroyed. Sandra emerges from the pyramid, but is now a golden giant. Sandra pursues Cobra and attempts to destroy the Turtle by setting it on fire. Cobra discovers that the 3rd volume of the Mars Ancient History is actually inscribed on top of the pyramid. Lady decodes the text and finds that the Ultimate Weapon can self-evolve...