Chronicle of the unheralded and unsuccessful invasion of the Soviet Union by the Italian army during World War II.

Svetlana, young pretty girl, works as a trolleybus driver in a small town and almost all her permanent passengers are at least a little bit in love with her.

After a test flight, pilot Sergei Sazonov was invited to a group of astronauts. Intensive preparation begins for the flight into space: classes in the weightlessness chamber, constant study. Sergei decides that he does not have the right to meet with a cheerful student Natasha, whom his friends accuse of frivolity. But their telephone conversation ends up asking him to marry him.