Film divided into three different episodes. In the first one, a saboteur damages the water pipes, which causes flooding of a cement stock. It turns out that the perpetrator is a member of the brigade of young concrete workers. The second story is about Jacek, who works in a brigade building a dam. He is recalcitrant and undisciplined. The collective tries to influence his behavior, but it has the opposite effect. Only an argument at a village party will change Jacek's attitude. Finally, a man returns to the countryside after completing his Polish Service stay. With the money he earned, he buys his godfather a horse.