Biggles and company get sidetracked into an Egyptian adventure while on their way to a squadron reunion dinner in South Africa. They meet a threatened scientist and agree to help him find a lost oasis called Zenzura in the middle of nowhere.
Their quest is hindered by the requisite villain, who has claimed the oasis and the antiques buried there. He gets off to a spectacular start by marooning them at the oasis and destroying their supply (camel) train.