Inspector Andreev arrives in a small provincial town. He starts digging through his predecessor's unsolved case, which involves certain big shots in town.
The story is set in the 1800s.Elena and Inzarov,a revolutionary Bulgarian ,fall in love.After secretly marrying they decide to join the liberation, but on the eve of departure Dmitry dies. Elena takes Inzarov's body to the Balkans .
The young Bulgarian Muslim woman Zyulker wants to study and become a teacher. Her father decides to arrange a marriage to her. After the wedding, she runs away and goes to the town. There she starts work in a hostel. Her husband takes her back. He beats and humiliates her. She gives birth to her child prematurely, takes the baby and goes to the school for Muslim in the town. She has to surmount many difficulties. The young woman meets her first teacher Stefanov. The two fall in love. With his help, Zyulker finishes her study successfully and makes up her mind to return to her native village as a teacher. Stefanov follows her and proposes to her. The two embrace.
Captain Velkov was sent chief of a border post near the village of Novi Izvor, where he was a partisan. In Novi Izvor a celebration is being prepared to mark the switching on of the electricity. Saboteurs cut the cables, killed the watchman and set fire to the machinery on the farm.
The university student Bobchev joins a youth brigade. The commander's council entrust Bobchev with a literacy course for members of the brigade. Velizarov and Monkata arrive in the camp to carry out sabotage. They place explosives on the dam, and attempt to win Bobchev over by means of intrigue. There is a storm: the camp is put on the alert. Everyone joins the rescue work at the dam. After a long struggle with Velizarov, Bobchev cuts the burning fuse of the explosive. The dam does not yield to the pressure of the flood. Everymen sing in Jubilation.
