The story of a young woman who, after her years at university in the city, returns to her hometown an engineer and begins work on a huge new power plant. She continues to supervise work on the plant throughout the war.

In the north of the Urals, the construction of a chemical plant has begun. Construction manager Pyotr Musatov appoints Anton Kitaev, the husband of his sister, a direct and honest man, a former front-line soldier, as a deputy. Anton soon realizes that Peter is a typical careerist, pursuing only selfish goals. Kitaev sharply criticizes the leadership. As a result, he breaks up with his wife, who supports her brother in everything. Moreover, rivalry in love is added to the confrontation in the work - Peter and Anton are in love with one woman ...