A young astronomer is becoming more of administrator instead of concentrating on science.

A young zoologist interrupts his scientific expedition after learning about the sudden death of his father, a major trade figure. From the notes left behind by his father, the young man discovers with horror that he could not bear the betrayal revealed to him by his closest friend and ally, who also turned out to be his wife’s lover.

Roman Lebedichkin, a founder of a big and successful company, is surprised to found out that he's not so welcomed by previous partners after he gets released from jail.

Kraskov and Vera have long loved each other. They are unable to part, however, and connect their destinies can not and have already accepted the circumstances of life: he has a family, three children. A chance meeting in Moscow with a young couple, familiar with the rest in the South, pushes them to a decisive step…

In 1944 a Soviet marine air force unit stationed near Murmansk is fighting off the German bombers attacking the British navy convoys supplying the Soviet Union with war materials under the lend-lease agreement.