The Battle of Stalingrad ended. The Soviet Army is preparing a large-scale Belarusian strategic offensive operation codenamed "Bagration". A week before the start of the operation, it becomes known that the Germans have mined all the approaches to the city of N. Roads, bridges, forests are mined. They have created entire minefields. The city itself is totally mined. Civilians may suffer. An experienced scout Tishkov is called to the army headquarters. Fyodor Tishkov, a former circus performer who once performed with power numbers, receives a new task.