Grady and his partner Tuyen, contract to fly a passenger, Carson, from Houston to an island off the western coast of South America. The trip is routine until they fly into a sudden storm that nearly causes them to crash. The storm passes quickly but they can't locate the island. Frustrated, Grady flies to the mainland. He is unable to find any familiar landmarks and the seaplane is running low on fuel so they land on a river. The next day they set out on foot to search for help. When they rescue a native woman, she tells them they are in a land called Zumiaand she has never heard of a place called South America or Earth. The native woman, Xaria, joins them and their adventure begins.