影片改编自霍华德·卡普兰1977年的同名小说，故事讲述一位间谍潜伏在叙利亚，试图将化学武器科学家及其家人护送出大马士革。

ThestoryofParker’sneweffort,pennedbyWilliam“Billy”Ivory,isinspiredbytrueeventsandissetinthesummerof2014.Ontheoccasionofthe70thanniversaryoftheD-DaylandingsinFrance,octogenarianBernardJordan(playedbyMichaelCaine)madeglobalheadlines.He’dstageda“greatescape”fromhiscarehometojoinfellowwarveteransonabeachinNormandy,commemoratingtheirfallencomrades.Thebittersweetscriptissaidtoexplore“therealitywithwitandaverybigheart”.Bernie’sadventure,spanningjust48hours,alsomarkedtheculminationofhis60-yearmarriagetoIrene(GlendaJackson).Thefilmwillalsocelebrate“theirlovewithoutanysentimentalityandwithaneyetothelessonswemightalllearnfromtheGreatestGeneration”.