Pavel's mother hates his fiancee. When Pavel serves in the Army she writes him that Nastya is no longer faithful to him. Pavel decides not to return to his native town. But many years later he returns to his fathers funeral and finds out that Nastya died sometime ago. She left three kids orphans and her elder daughter is also a daughter of Pavel.
18-year-old Alyosha saved a pregnant woman from death. The woman safely gave birth to a son and refused to give him up. Then the doctors tracked down Alexei, and the young man brought the child to his home.
A young engineer Dmitriy Zherekhov who came to the aircraft plant is trying to prove to the director that it is necessary to switch to new methods of organizing production. He is supported by both experienced test engineer Aleksei Sedykh and test engineer Lyudmila Rudneva. Lyudmila likes Dmitriy, but his rigidity and rationalism complicate their relationship...
