20世纪60年代,当人们看到飞机在空中飞翔和船只在海上行驶时,也许怎么也不会想到,在大洋的深处还生活着一群神秘的人,他们就是曾经准备在海底执行秘密任务的美国海军潜水员。当然,大洋深处的生活让他们承受着各种痛苦和压力。几十年来,很少有人清楚此事,甚至连他们最亲近的人也不知道他们在干什么…… In the 1960s, when people saw planes flying in the sky and ships traveling at sea, they might not have imagined that there were mysterious people in the depths of the oceans who were once prepared to carry out secret missions on the seabed American Navy diver. Of course, the depths of life in the ocean have put them under all kinds of pain and stress. Very few people have been aware of this for decades and even the closest of them do not know what they are doing ...