The film's plot is based on the real murder of the Soviet diplomatic courier Theodor Nette abroad. The pouch of the Soviet diplomat, which is stolen by British spies, is taken away by the sailors of a ship sailing to Leningrad who deliver it to the authorities. The intelligence agents make every effort to retrieve the bag.
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.
