The story takes place at a concrete plant, where Zina, a dispatcher known as one of the best employees, tries to enforce order, combatting false reporting and sloppy work.
She files reports against careless drivers, and one of them, in an attempt at revenge, deliberately delivers a load of concrete to a dump instead of the location specified by Zina.
The concrete hardens, and the driver then complains to the manager, falsely accusing Zina of misdirecting the delivery.
In protest, Zina sits on a tree stump near the dump where the ruined concrete was left, declaring that she will not leave until the driver admits his deception and apologizes.
The next day, the construction manager arrives and tries to persuade Zina to go home, but she stands firm and repeats her demands.