Nate Wilde is a former Green Beret and aspiring Harvard archaeologist. Leaving the military after a catastrophic deployment that ended with most of his team dead or injured, he chooses to pursue his passion for history. When his dissertation proposal to search for the legendary lost city of Ubar in Saudi Arabia is rejected by the Harvard examining committee and his expedition permit is denied by the Saudi government, Nate resolves to continue his research by any means necessary. And the only path left to him is to enter Saudi Arabia’s Empty Quarter through war-torn Yemen, the same sands where his brothers lost their lives years ago.