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抗日战争时期，某农村。小王（蔡元元 饰）年龄不大，却是八路军的“老”交通。小荣妈（莫愁 饰）也是交通员，十二岁的小荣（赵玉嵘 饰）很羡慕这份工作。一天，汉奸李天魁（章志直 饰）抓走了小荣妈，小王把小荣带到张大娘（吴茵 饰）家，大娘象亲女儿一般对待她。小王把小荣妈的遭遇报告给地委会赵科长（郭允泰 饰），赵科长把小荣带到地委会，让她每天学文化，长大参加八路军。小王接到一个紧急任务，要他天亮前送一份重要文件给廖团长，结果走到半路发现文件不见了，他急的想哭，绝望之机，小荣回来了，没想到竟是年幼的小荣替他完成了任务。后来小王和小荣配合大人们完成了很多重要任务......。NOVA: Mysteries of Sleep Like virtually every other animal, humans need sleep to survive. But why? What do we gain from spending nearly a third of our lives in such a defenseless state? And what's at stake if we sleep poorly? The functions of sleep have long been something of a mystery. But now scientists are peering deep into the brain to see what happens while we snooze. One ...。