A dentistry student, graduating with honor, does not get the desired job and has to start working as a MASTER OF ALL TRADES in a construction company. He has to paint walls, clean chimneys, and fix water conduits. He is not able to accomplish any of these tasks and gets into funny situations all the time. Moreover, he and his roommate, a good friend of his, quarrel over a girl. But this situation is a misunderstanding as well - the friends love different girls. A happy end is in sight.

Bistra and Evgeny, first year university students, are in love and inseparable, but slowly with time Bistra becomes infatuated with Evgeny's dad, as she sees him as the embodiment of what her dream lover would be. Shocked and distressed at this revelation, Evgeny hits a pedestrian with his car. Bistra's the only one who can help him in court if she's willing to admit what they talked about before the crash.

The film is dedicated to the uprising, which broke out in Bulgaria in September 1923. All characters, with the exception of the leaders of the uprising Georgi Dimitrov and Vasil Kolarov, are symbolic characters. The central figures, Stefan and Peter, impersonate the motive forces behind the uprising - the workers and the peasants. They are involved in worker's strikes, in the stormy events of the First World War and the Soldier's uprising in 1918. They also participate in the bloody clashes of the September uprising and suffer its defeat after they have seen too late the need for concerted action by communists and agrarians.

Todor Primov is an officer of the royal army who changes sides and goes over to the partisans. After the war, he graduates in engineering and is appointed manager of several construction projects. His car crashes on the eve of March 13. After his recovery, Primov resumes his work. Yet, secret information starts leaking from the projects and some serious accidents occur. Andrey, who befriended Todor Primov back in the partisan unit, goes to investigate the causes. He knows that Todor was colored-blind while this engineer distinguished colors. Andrey manages to get at the truth: Parvan Primov, Todor's twin brother, has made the car crash. On that night he killed his brother and took his place...