Contact in Nevada

The young archeologist thought he’d found something important in the Egyptian tomb.
“It’s a fake,” said his colleagues, sneering at the small tablet. “Just look at the images of the alien heads.”
“It’s very old,” said a wise old Italian, “and it has instructions for how to contact the UFOs that fly in Earth’s skies.”
The young man and the Italian’s granddaughter began a long journey to the deserts of Nevada, hoping to meet the aliens and avoid a world-wide conflict.
A covert group, operating deep inside the US government was intent on destroying the aliens, and wanted to stop the two travelers at all costs. The chase was on.