Imperialist spies try to disrupt and stop production in a large steelworks.
Three separate short stories about young athletes who lose their chances of success. Young swimmer - because of unhappy love. Boxer because of a fight with hooligans, for which the judges will disqualify him. But the cyclist must decide for himself what is more important for him: victory or friendship.
Antek is an inexperienced seaman favored by his teachers. On his first trip to the sea he learns the hardships of the work and almost causes a tragedy.
