Nick Randall is an archeologist on the fringes of the scientific community who believes that mankind isn't alone in the universe ... or on this planet. When a mysterious benefactor funds his research, Randall departs on an expedition to find the lost city of Vilcabamba. Hidden deep in the Amazon, Randall believes this legendary city holds proof that his controversial theory is true. Upon arriving at the ruins, he mysteriously disappears.
Randall's beautiful daughter Samantha learns of her father's disappearance from his mentor Dr. Francisco Andrade who calls Sam and pleads for her help. An accomplished archeologist herself, Sam must decide if she will set aside her career and search for the man she blames for her mother's death. Reluctantly, she agrees and flies to Peru to search for her father.
But someone else is looking for her father as well. Francis Dumond, a shadowy man with a dark past and unlimited resources, will stop at nothing to find Vilcabamba and use its technology to control the world. It's a race against time to see if Sam can find her father, prove his theories, and stop Dumond before a stratovolcano destroys Vilcabamba—and all of them as well.