ThestoryrevolvesaroundEstelle,anincomparablyprofessionallong-haulpilot/captainwholeadsaperfectlystructuredlifealongsideherlovingandprotectivehusbandGuillaume.Everythingseemstobegoingwell,althoughtheendlessflightsandboutsof"jetlag"arebeginningtoupsettheyoungwoman’sbiorhythms,especiallyhersleep.Oneday,inacorridorinNiceairport,sherandomlycrossespathswithAna,aphotographershe’dhadapassionateaffairwithtwentyyearsearlier.Estellehasnowayofknowingthatthisreunionwillsuckherintoanightmaresquespiralandlureherlifeintoirrationality...