In the spring of 1944, on the eve of Operation Bagration, a Soviet aircraft of the latest design, wrecked by German anti-aircraft guns, landed in a forest near the Chernavichi farm. Reinforced reconnaissance and sabotage groups are sent to search for him from both sides. From the Soviet - officers of Smersh, regimental intelligence and a group of former fines with experience in guerrilla warfare. From German - special unit "Black Fog." Both of them have one order: to find the plane and the pilot and urgently deliver them to their rear. Both of them are obliged to take all measures to ensure that the objects do not go to the enemy. In Chernavichi forest, both groups collide in a deadly battle...