To celebrate the 40th anniversary of the Apollo moon landings on 20 July 1969, the Apollo 11 crew come together by chance. As one of the three, Michael Collins, later remarked the Apollo 11 crew were “amiable strangers”. Neil Armstrong, as commander, will fly the lunar module down to the surface of the Moon. The descent does not go smoothly. Armstrong spends about 15 minutes alone before Buzz Aldrin emerges to join him. But when they try to lift off to return to the command module, a circuit breaker connected to the ascent engine breaks.
　　With everyone on tenterhooks (President Nixon has a speech prepared in case the mission goes fatally wrong), the astronauts manage to throw the switch by jamming the nib of a pen in it. Joyfully reunited – Collins even kisses them – the ‘amiable strangers' make the long journey home. The world has watched their mission in awe. Appreciating the story for the first time from the perspective of a TV audience, Buzz Aldrin remarks poignantly to Neil Armstrong, “We missed the whole thing”.
　　阿波罗11号太空船于19697月实现了人类登上月球的梦想。当的太空船发射现场吸引了超过一百万的人群，全世界观看发射现场直播的观众人数也达到了创纪录的六亿人。今将会是人类第一次登月四十周，本片以戏剧纪录片形式，披露这划时代的创举中不为人知的内幕，其中有些秘辛几乎足以毁破这趟伟大任务。
　　一枝笔竟然救了首次登上月球的太空人的命！岩士唐等太空人完成登月任务準备返回地球时，发现登月小艇启动电源的开关被他们意外弄断了，无法起飞。危急中，太空人拿出一枝原子笔塞进开关的洞里，才顺利启动登月小艇，免除了一场悲剧。
　　此外，纪录片更披露，当美国急欲成为第一个登上月球的国家，阿波罗11号在还没完全準备好的状态下就出发，当的美国总统尼克逊甚至已经準备好宣布哀悼三位太空人壮烈牺牲的讲稿；而美国政府也事先下令NASA，万一任务失败就即时切断连线，以免世人亲眼目睹太空人飘进太空的场面。