在这部短片里，我们遇见了李宏——一位兢兢业业将自己的青春年华奉献给了中国国家电网公司，作为一名无人机工程师和操作员。他的飞艇的研发使得公司能够将光明带给偏远的村庄，一位普普通通的电力工作人员，一位披星戴月，日夜前行的光明使者。在影片中，我们还拜访了定西的一个村庄，马子川。听到了这个村庄的人们是如何讲述电给他们的生活带来的改变。

In this short documentary, we meet Li Hong – a studied engineer who has dedicated his career to the China State Grid corporation as a UAV engineer and operator. His work with the unmanned wiring aircraft has allowed the corporation to connect remote villages to power, that would otherwise be impossible. He is an emissary to the day and night.To that end, in the film, we also visit one of these villages, Mazichuan, Dingxi, to hear what power has done for people of the village.