Taken as a whole on the 'Dunkirk' Blu-ray's bonus disc, the individual featurettes from each section of 'The Making of Dunkirk' add up to an in-depth behind-the-scenes documentary that is longer than Dunkirk itself and that covers all aspects of the film from its inception to post-production and scoring. An impressive roster of crew describe such technical challenges as filming on water, designing camera mounts to attach the heavy IMAX rigs to vintage airplanes, rebuilding the "mole" that extends into Dunkirk's harbor and melding aerial footage with inserts shot on a soundstage with a gimbal rig (and yes, that's Nolan himself operating the gimbal). The extras also note the exceptional support and assistance rendered by the local Dunkirk authorities and by Britain's Association of Dunkirk Little Ships, which supplied many of the actual vessels from the 1940 evacuation for use in the film.

第二次世界大战初期的1940年5月25日至6月4日之间，法西斯德国的机械化部队采用其擅长而凶猛的闪击战，打得英法比利时等国的盟军措手不及、全线崩溃。…

本片从二条主线讲述了营救行动。一条讲述的是前方。下士宾斯带领本班人员炸毁桥梁后，发现他们部队在晚上已经撤退，给他们在法国只留下了一名司机和一辆卡车，他们会合后，在撤退时遇空袭，司机丧生，车辆被炸坏，他们只好徒步向敦刻尔克撤退，经过不懈努力，他们在一个英国皇家空军司机帮助下，来到海滩，与那里的几万名英国远征军和法国士兵一起，等待撤退。 一条讲述的是后方。英国记者查尔斯，得知德军已经包围敦刻尔克，成千上万的盟军士兵面临被俘虏和击毙的危险，他四处动员自己的一些朋友和爱国人士，驾驶个人货船、渔船、游艇等船只，不顾个人安危，穿越英吉利海峡，从敦刻尔克援救盟军士兵们...