The best bell-ringer of the church Fedor Kuzmich Shtukov becomes the foreman of production at the shipyard. Communists and Komsomol members are trying to persuade Fedor to forget about the church, but in vain. Daughter Anna laughs in the face of her father - and in vain too. But when the plant desperately needed a scarce metal, Shtukov, painfully thinking about his native plant, supported the proposal of one of the workers to cast the billet from the church bell, and the vessel was ready for launch on time.

Pyotr, backward lad from poor village, comes to town desperate for work. He's hired as replacement ("scab") worker at big metallurgical factory, which is in the throes of a strike organized by the Bolsheviks (communists). Deceitful industrialist's son involves naive young man in an attempt to murder Bolshevik leader.

In 1929, the Chinese are preparing an attack on the CER, recruiting soldiers to their gang. Among them there is a resident of a lodging house Van. Having recovered after a sudden attack on a Soviet border village, the Red Army squad goes on the offensive. Wang is among the prisoners. Wang and another prisoner go on the run. But on the road between the fugitives there is a conflict and young Chinese Wang begins to realize who his true enemy is...