In mid-1960s, groups of American paratroopers arrive at a Hmong village near the Vietnam-Laos border. Among the troops are former villagers who collaborated with the French; having returned home , they seek to win over the village’s support.

At the close of the Sino-Vietnamese border war, a journalist travels to Lạng Sơn in northern Vietnam—the hometown of his former girlfriend—to report on the situation there.

The plot of the film revolves around revolutionary soldiers who come from different classes, but all share the same patriotism. They had to overcome many life-and-death challenges and enormous adversities in order to mobilise the masses to prepare for an uprising and seize power from the Japanese fascists, in a situation where the country fell into the tragedy of famine.