Mexico City, 1948. The Aztec people believe that long ago the eye of their sun god, Huitzilopochtli, was cast into a great lake, showing them where to build their empire.

The eye, if it was ever considered to be more than a myth, was presumed lost during the Spanish Conquest, but recent expeditions in Mexico’s southern jungles seem to imply that it is, indeed, real – and was purposefully hidden from the invading Spanish!

Of course, it is not the literal eye of a god, but a huge yellow diamond of a kind rarely found in the Americas. It has taken months to find the place, but the pyramid which is believed to hold the gem is behind a cleverly sealed door.

It’s up to you to find the diamond and see it is placed safely in the Museum of Mexico. But you must hurry, a cadre of treasure seekers is on the way, hoping to steal the diamond for their own profit. You must not let that happen; the Eye of the Sun God belongs to Mexico!