A young boy (I. Spassov) gets his hand caught in a bridge beam on a hot summer day in this straightforward drama. As the water level rises in the river, people band together to try and save the boy before he drowns. He is comforted by his mother (G. Vachtov) and an army general (P. Slobokov), and the latter calls out the troops to save the lad from liquidation. This feature was the official Bulgarian entry at the 1965 Cannes Film Festival and is devoid of the usual 1960s propaganda associated with countries from the Eastern block of Europe.
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.
