Student Ba Duy sinks deep into heartbreak and a nihilistic street life when his sweetheart, Diem Huong, suddenly leaves him to marry an American diplomat.

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.