FBIagentGretchenBlairisonaflighttoWashingtonD.C.whenthemanseatedbesidehermakesanunusualoffer.Heexplainsthattheplanethey'reonisabouttobehijacked,andpromisestopayherseventy-fivemilliondollarsifshecangethimsafelybackontheground.Whenagangofprofessionalthievestakescontroloftheplane,sherealizesheisn'tjoking.SoonGretchenfindsherselfcaughtinthemiddleofanelaboratemid-airheist,fightingtosavethepassengerswhilethethievesteartheplaneapart,searchingforthestolenloothiddensomewhereonboard...