一个叫金大义的国民党骑兵受伤被俘,被安排在李家崖村。村民都不愿意接受他,只有一位善良的大嫂收留了他。骑兵头目哈胡子是金大义的义父,为寻找金大义来骚扰李家崖,金趁机逃跑,但是受伤未愈的他没跑多远就落在了沟里,大嫂为此四处寻找。村里断粮,金大义偷吃了小羊羔,大嫂获知丈夫牺牲的消息,悲愤的大嫂将金赶出了家门,但金自己回到了大嫂家。金主动承担了帮助村里运粮的任务,并与前来抢粮的哈胡子不期而遇,当哈要枪杀大嫂时,金向哈扣动了扳机。
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...
一颗神秘小行星接近地球,后坠入海中,不想其实际上是外星的自动侵略武器,专门吸食地球的资源和电量,更可怕的是如果不能摧毁这个武器,还会有更多的外星武器来到地球。。