The Soviet embassy in England sends two couriers with diplomatic mail to Leningrad. The inspector of security police, White, and a group of policemen attack the Soviet diplomatic couriers at night. The documents get to an English trackman, who gives them to his son, a sailor in Portsmouth.

In the short-lived Commune of Paris, a conscripted soldier falls in love with a Communard saleswoman. As the army cracks down on the revolutionaries, the soldier is forced to fight against the Commune, and the pair's love is put to the test.

The struggle of the Komsomol members against private speculators for the surrender of fish to the state.