On a mountaintop in Mexico, ancient galactic enemies meet!

On one side, the Great Old Ones, who had benevolently ruled the land in the days of the Toltecs, before the coming of the cruel Aztecs.

On the other side, the Huitzili, who had come from the distant Evil Stars to teach the Aztecs conquest and war. In return, they demanded endless human sacrifice, human blood, and human hearts. And now, if they gain control of the awesome secret power within the mountain, they will plunge the entire Earth into endless barbarism!