It is 1937 and tensions are high. A spectacular air race around Europe seeks to promote unity among a group of young pilots, but distrust and animosity are rife. The British and sole female contestant, Stella North, is determined to prove not only her skill, but also her identity as her Nansen passport declares her 'stateless'.

However, barely a few hours in, Stella is witness to a horrifying attack when a contestant’s plane is forced out of the air and crashes. Was this the work of another competitor desperate to win? Was the attack random or premeditated and, most importantly, will it happen again?

With the competition heating up and the death ruled an accident, Stella is left to form her own investigation. Can she find allies among her fellow competitors or will suspicion and deceit bring them all down?