凯拉和大卫曾经是名为“影子部队”的跨国私人雇佣兵部队的行动头领。但是两人经过多年的战场厮杀早已厌倦了打打杀杀的生活。而且他们两人违反了组织命令禁止的恋爱禁令。成为夫妻的他们只能以假死之由退出了“影子部队”。婚后二人生下了自己的儿子。但是很快组织发现了他们的踪迹，并开出巨额赏金开始追杀这一家人。凯拉和大卫为了保护他们的儿子，只能转入地下活动。二人利用自己多年的人脉关系和丰富的作战经验，和追杀者展开了激烈的对峙，最终他们逃出生天。
Based on the novel by Karel Capek, the prominent Czech writer of the early 20th century who coined the word robot for his play R.U.R., the story revolves around a discovery of Krakatit - a powerful explosive - by Prokop, an experimental scientist who, following an accidental explosion in his lab, slips in and out of delirium. When he realises that, in a delirious period, he has given the formula for making Krakatit to one of his colleagues, he tries to find the man, who does not realize how dangerous a thing Krakatit is. In the process, he nearly gives his discovery away again to foreign interests, a group of anarchists, and even greater forces of darkness...
影片根据哈罗德·费雷德里克Harold Frederic (1856-1898)的小说改编，故事来自于真实的历史。作者曾经在童年的时期经历过美国的内战。1862年美国纽约州的秋天，有一名叫阿波内尔·比奇的养牛的农民，他内心固执、坚持自己的信念，因而坚决地反对内战而与自己的邻居以及政 府决裂。
