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