Ani, a charming young girl, is a driver at Sofia Airport. She sends a letter to her boyfriend Boyan, a worker at a large construction site. The letter contains a single word "yes". Boyan starts preparing for a wedding. The Soviet pilot Andrey will soon return home after several years spent working with his Bulgarian colleagues. They arrange a farewell tour of Bulgaria for him on which Ani has to drive him. Because of mistaken jealousy, Boyan tears up his sweetheart's letter.

The Soviet army is approaching the Bulgarian border. Many government ministers and army officers prepare to flee the country. The partisans take over the key administrative buildings. At the War Ministry, the commander of the armored brigade Major Essev hesitates between his sense of honor as an officer and his patriotic duty. He takes the side of the partisans.

The former partisan, officer Petko, became the chairman of the collective farm, establishing the cooperative economy, to overcome the resistance of kulaks and slackers who “ruined the economy“, and how with the help of friends Petko managed to unite people and establish work.

Evtim Manasiev is an outstanding engineer. At the office, he has made a name for himself as a "whole-hogger boss". At home, his motto is: "Love me, love my dog". His children rebel against his acting at variance with his own principles. Tired and exasperated, Manasiev realizes that he has been wrong in some of his actions. On a holiday, he runs into Mihaylova, a subordinate of his whom he has recently fired undeservedly. The meeting urges him to reconsider and to review painfully all his previous life and principles. —Georgi Djulgerov