A small circus troupe wants to perform for the children in a small Eastern European town, but is prevented from doing so by the evil town boss. The circus' clown and his colleagues come up with a plan to defeat the boss and his men and put on a show for the kids.

Abundant supplies of imported vaccine prove ineffective against an outbreak of foot-and-mouth disease epidemic in several population centers. Warehouse manager Rashkov has been found dead. Major Zahov has to investigate the case.

Young Nikolay is a national boxing champion. On a picnic, he meets Vanya and falls in love with her. They have a lunch in the restaurant and when a brawl erupts there, Vanya leaves. Nikolay tries to catch up with her in a car, but has an accident. The uncle of his friend offers to pay for repairs of a car if he will agree to act as a courier in foreign currency smuggling deal. Nikolay agrees to take along a box of matches. The uncle tells him that he will receive as many dollars as there are matchsticks in the box. Nikolay is due to leave for Paris to compete in the world championships. During the journey, his coach confiscates the box, thinking that the athlete is smoking. Nikolay has to explain everything.

20-year-old Georgi was adopted as a child. The family falls apart though and he ends up in a youth detention center. When released, he comes to face people's selfishness and disregard, He begins to steal things. The investigator working on his case talks to his adopted parents, his girlfriend and friends. Hiding from the police, Georgi ends up in a small town at the Black sea coast. He falls in love with his friend's sister Yana. Yet again, he finds no sympathy and understanding. He steals again. The investigator wants to help him but Georgi has given up all hope. He wants to commit suicide. Yana is the last spark of hope to bring him back to life.

The students Yoshkata and Petar share rooms and wartime privations in a poor man's street. Over a glass of vine, Yoshkata often talks about the stage life of genuine beauty. The student is unaware of the passion with which Vaska, the barmaid at the local pub, burns for him. Petar is a member of an antifascist combat unit. The pupil Katya loves him. Petar carries out a sabotage action and comes home wounded. Yoshkata manages to deceive the Germans who rush into their flat that they have been drinking and playing cards throughout the evening. He saves his friend. However, the secret agent notices the doctor's visits. When the police arrive to arrest Petar, Yoshkata tries to resist them and the agent shoots him dead. Petar goes underground. On the day of the liberation, all the residents of the poor man's street celebrate, and Katya and Petar happily reunited. Vaska is there, too, a baby in her arms, the fruit of her love with Yoshkata...

The new supervisor Vasil arrives at the construction site of a dam. Vasil has problems with his men, who mistrust him and reluctantly submit to his perfectionism. He becomes involved with the refreshment bar attendant Lilyana. Vasil, who always wanted children, cannot abandon his childless wife and breaks with Lilyana. When four workers are buried in a tunnel landslide, Vasil makes his way to them and manages to drag them all out, except for Zlatan, a spiteful egocentric, whose legs are caught under a fallen prop. Zlatan begs Vasil to save him, even if it means cutting of his legs. To release the miner's legs Vasil cuts the prop, which is also supporting the roof of the tunnel. Zlatan is rescued. However, Vasil is killed. Since then, the workers say his steps can be heard bellow the dam wall.

A tenement house needs to have steam heating installed. The residents find the necessary workers to do it, sign the contract and pay them in advance. The workers show up and start their job, but disappear immediately. Panic-stricken, the residents set up to search for them, only to find the workers in jail. Totally desperate, their only chance is to come up with an ingenious plan how to bring the work to the end.

A fishing boat comes back to the port. Fishermen are crestfallen, as they have caught only one very little fish. To save face, they fib they have 300 kilo of mackerel on board the boat. In their will to report a success, the port administration decides to pad out the weight. So, the very little fish is grossly exaggerated into tons of belted bonito, then into dolphin and ultimately, into a whale. Which results in celebrations, honors and awards... There, naturally, is no any whale. Instead of brilliant display of an unprecedented success, the white collars make a brilliant display of their unparalleled foolishness.