In the early 1920s, heiress Eve Tozer finds her lavish lifestyle threatened when her wealthy father vanishes in Asia. Consequently, Eve is given an ultimatum: she must locate her father within twelve days, or the family fortune will be forfeited to her scheming business rival. Desperate and determined, Eve hires disheveled former World War I pilot Patrick O'Malley, who now makes a living as a scrappy barnstormer. The two unlikely allies embark on a perilous journey from Istanbul through the mountains of Central Asia, facing hostile terrain, unpredictable weather, and various adversaries.

As they navigate their biplanes through war-torn regions and ancient cities, Eve and O'Malley encounter nomadic tribes, rebel forces, and a myriad of other obstacles. Their journey is marked by constant bickering and mutual disdain that gradually turns into respect and camaraderie. With each passing day, the challenges intensify, testing their resolve and resourcefulness. The search for Eve’s father becomes more urgent as their twelve-day deadline looms closer, adding escalating tension to their adventure. Their quest leads them deeper into unknown territories, revealing secrets and unexpected truths at every turn.