During the War of Resistance Against Japan, a CCP army unit guarding the southwest border follows what is ostensibly a trading caravan and discovers that these traders are actually smuggling arms and spy equipment to Chiang Kai-shek and his American allies.
In the 1950s, an army reconnaissance group finds an enemy spy organization lurking in a coastal town in southeast China intending to collect military intelligence.
The film shows a soldier - the defender of his people, his native land, convinced of the righteousness of the cause for which he is fighting, not sparing his life, longing to free his homeland for work and a peaceful life.